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Finding the Fourth Proportional to 71,702.95, 98,952.48 and 39,440.06

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Solution

The fourth proportional to 71,702.95, 98,952.48 and 39,440.06 is: 54,428.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,702.95 : 98,952.48 = 39,440.06 : x
  2. Step 2: Convert to fraction form
    71,702.95/98,952.48 = 39,440.06/x
  3. Step 3: Cross multiply
    71,702.95x = 98,952.48 × 39,440.06
  4. Step 4: Simplify right side
    71,702.95x = 3,902,691,748.35
  5. Step 5: Solve for x
    x = 3,902,691,748.35/71,702.95
  6. Step 6: Final answer
    x = 54,428.61

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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.