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Finding the Fourth Proportional to 88,487.56, 132,419.40 and 55,223.20

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Solution

The fourth proportional to 88,487.56, 132,419.40 and 55,223.20 is: 82,640.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,487.56 : 132,419.40 = 55,223.20 : x
  2. Step 2: Convert to fraction form
    88,487.56/132,419.40 = 55,223.20/x
  3. Step 3: Cross multiply
    88,487.56x = 132,419.40 × 55,223.20
  4. Step 4: Simplify right side
    88,487.56x = 7,312,623,010.08
  5. Step 5: Solve for x
    x = 7,312,623,010.08/88,487.56
  6. Step 6: Final answer
    x = 82,640.12

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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.