Home / 66,881,248.20-100,321,872.30-38,183,434.20

Finding the Fourth Proportional to 66,881,248.20, 100,321,872.30 and 38,183,434.20

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Solution

The fourth proportional to 66,881,248.20, 100,321,872.30 and 38,183,434.20 is: 57,275,151.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,881,248.20 : 100,321,872.30 = 38,183,434.20 : x
  2. Step 2: Convert to fraction form
    66,881,248.20/100,321,872.30 = 38,183,434.20/x
  3. Step 3: Cross multiply
    66,881,248.20x = 100,321,872.30 × 38,183,434.20
  4. Step 4: Simplify right side
    66,881,248.20x = 3,830,633,609,787,853
  5. Step 5: Solve for x
    x = 3,830,633,609,787,853/66,881,248.20
  6. Step 6: Final answer
    x = 57,275,151.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.