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Finding the Fourth Proportional to 60,614.90, 90,906.15 and 21,167.90

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Solution

The fourth proportional to 60,614.90, 90,906.15 and 21,167.90 is: 31,746.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,614.90 : 90,906.15 = 21,167.90 : x
  2. Step 2: Convert to fraction form
    60,614.90/90,906.15 = 21,167.90/x
  3. Step 3: Cross multiply
    60,614.90x = 90,906.15 × 21,167.90
  4. Step 4: Simplify right side
    60,614.90x = 1,924,292,292.59
  5. Step 5: Solve for x
    x = 1,924,292,292.59/60,614.90
  6. Step 6: Final answer
    x = 31,746.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.