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Finding the Fourth Proportional to 85,292.52, 117,724.80 and 58,113.60

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Solution

The fourth proportional to 85,292.52, 117,724.80 and 58,113.60 is: 80,211.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,292.52 : 117,724.80 = 58,113.60 : x
  2. Step 2: Convert to fraction form
    85,292.52/117,724.80 = 58,113.60/x
  3. Step 3: Cross multiply
    85,292.52x = 117,724.80 × 58,113.60
  4. Step 4: Simplify right side
    85,292.52x = 6,841,411,937.28
  5. Step 5: Solve for x
    x = 6,841,411,937.28/85,292.52
  6. Step 6: Final answer
    x = 80,211.16

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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.