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Finding the Fourth Proportional to 88,310, 132,432.60 and 29,128.16

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Solution

The fourth proportional to 88,310, 132,432.60 and 29,128.16 is: 43,681.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,310 : 132,432.60 = 29,128.16 : x
  2. Step 2: Convert to fraction form
    88,310/132,432.60 = 29,128.16/x
  3. Step 3: Cross multiply
    88,310x = 132,432.60 × 29,128.16
  4. Step 4: Simplify right side
    88,310x = 3,857,517,962.02
  5. Step 5: Solve for x
    x = 3,857,517,962.02/88,310
  6. Step 6: Final answer
    x = 43,681.55

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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.