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Finding the Fourth Proportional to 88,070.40, 132,105.60 and 28,915.20

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Solution

The fourth proportional to 88,070.40, 132,105.60 and 28,915.20 is: 43,372.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,070.40 : 132,105.60 = 28,915.20 : x
  2. Step 2: Convert to fraction form
    88,070.40/132,105.60 = 28,915.20/x
  3. Step 3: Cross multiply
    88,070.40x = 132,105.60 × 28,915.20
  4. Step 4: Simplify right side
    88,070.40x = 3,819,859,845.12
  5. Step 5: Solve for x
    x = 3,819,859,845.12/88,070.40
  6. Step 6: Final answer
    x = 43,372.80

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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.