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Finding the Fourth Proportional to 71,454.90, 98,601.30 and 39,623.70

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Solution

The fourth proportional to 71,454.90, 98,601.30 and 39,623.70 is: 54,677.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,454.90 : 98,601.30 = 39,623.70 : x
  2. Step 2: Convert to fraction form
    71,454.90/98,601.30 = 39,623.70/x
  3. Step 3: Cross multiply
    71,454.90x = 98,601.30 × 39,623.70
  4. Step 4: Simplify right side
    71,454.90x = 3,906,948,330.81
  5. Step 5: Solve for x
    x = 3,906,948,330.81/71,454.90
  6. Step 6: Final answer
    x = 54,677.12

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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.