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Finding the Fourth Proportional to 71,702.50, 98,952.27 and 39,440.12

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Solution

The fourth proportional to 71,702.50, 98,952.27 and 39,440.12 is: 54,428.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,702.50 : 98,952.27 = 39,440.12 : x
  2. Step 2: Convert to fraction form
    71,702.50/98,952.27 = 39,440.12/x
  3. Step 3: Cross multiply
    71,702.50x = 98,952.27 × 39,440.12
  4. Step 4: Simplify right side
    71,702.50x = 3,902,689,403.07
  5. Step 5: Solve for x
    x = 3,902,689,403.07/71,702.50
  6. Step 6: Final answer
    x = 54,428.92

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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.