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Finding the Fourth Proportional to 88,536.68, 132,779.10 and 72,915.56

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Solution

The fourth proportional to 88,536.68, 132,779.10 and 72,915.56 is: 109,351.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,536.68 : 132,779.10 = 72,915.56 : x
  2. Step 2: Convert to fraction form
    88,536.68/132,779.10 = 72,915.56/x
  3. Step 3: Cross multiply
    88,536.68x = 132,779.10 × 72,915.56
  4. Step 4: Simplify right side
    88,536.68x = 9,681,662,432.80
  5. Step 5: Solve for x
    x = 9,681,662,432.80/88,536.68
  6. Step 6: Final answer
    x = 109,351.99

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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.