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Finding the Fourth Proportional to 69,653.76, 96,122.18 and 39,845.76

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Solution

The fourth proportional to 69,653.76, 96,122.18 and 39,845.76 is: 54,987.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,653.76 : 96,122.18 = 39,845.76 : x
  2. Step 2: Convert to fraction form
    69,653.76/96,122.18 = 39,845.76/x
  3. Step 3: Cross multiply
    69,653.76x = 96,122.18 × 39,845.76
  4. Step 4: Simplify right side
    69,653.76x = 3,830,061,314.96
  5. Step 5: Solve for x
    x = 3,830,061,314.96/69,653.76
  6. Step 6: Final answer
    x = 54,987.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.