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Finding the Fourth Proportional to 113,016, 155,966.94 and 62,715

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Solution

The fourth proportional to 113,016, 155,966.94 and 62,715 is: 86,549.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,016 : 155,966.94 = 62,715 : x
  2. Step 2: Convert to fraction form
    113,016/155,966.94 = 62,715/x
  3. Step 3: Cross multiply
    113,016x = 155,966.94 × 62,715
  4. Step 4: Simplify right side
    113,016x = 9,781,466,642.10
  5. Step 5: Solve for x
    x = 9,781,466,642.10/113,016
  6. Step 6: Final answer
    x = 86,549.40

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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.