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Finding the Fourth Proportional to 66,780.74, 92,157.21 and 36,972.74

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Solution

The fourth proportional to 66,780.74, 92,157.21 and 36,972.74 is: 51,022.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,780.74 : 92,157.21 = 36,972.74 : x
  2. Step 2: Convert to fraction form
    66,780.74/92,157.21 = 36,972.74/x
  3. Step 3: Cross multiply
    66,780.74x = 92,157.21 × 36,972.74
  4. Step 4: Simplify right side
    66,780.74x = 3,407,304,564.46
  5. Step 5: Solve for x
    x = 3,407,304,564.46/66,780.74
  6. Step 6: Final answer
    x = 51,022.26

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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.