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Finding the Fourth Proportional to 71,710.17, 98,962.41 and 39,446.13

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Solution

The fourth proportional to 71,710.17, 98,962.41 and 39,446.13 is: 54,436.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,710.17 : 98,962.41 = 39,446.13 : x
  2. Step 2: Convert to fraction form
    71,710.17/98,962.41 = 39,446.13/x
  3. Step 3: Cross multiply
    71,710.17x = 98,962.41 × 39,446.13
  4. Step 4: Simplify right side
    71,710.17x = 3,903,684,089.97
  5. Step 5: Solve for x
    x = 3,903,684,089.97/71,710.17
  6. Step 6: Final answer
    x = 54,436.97

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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.