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Finding the Fourth Proportional to 86,142.67, 129,220.17 and 22,962.47

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Solution

The fourth proportional to 86,142.67, 129,220.17 and 22,962.47 is: 34,445.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,142.67 : 129,220.17 = 22,962.47 : x
  2. Step 2: Convert to fraction form
    86,142.67/129,220.17 = 22,962.47/x
  3. Step 3: Cross multiply
    86,142.67x = 129,220.17 × 22,962.47
  4. Step 4: Simplify right side
    86,142.67x = 2,967,214,517.97
  5. Step 5: Solve for x
    x = 2,967,214,517.97/86,142.67
  6. Step 6: Final answer
    x = 34,445.35

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1.5x scale

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.