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Finding the Fourth Proportional to 88,207.20, 132,310.80 and 53,215.20

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Solution

The fourth proportional to 88,207.20, 132,310.80 and 53,215.20 is: 79,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,207.20 : 132,310.80 = 53,215.20 : x
  2. Step 2: Convert to fraction form
    88,207.20/132,310.80 = 53,215.20/x
  3. Step 3: Cross multiply
    88,207.20x = 132,310.80 × 53,215.20
  4. Step 4: Simplify right side
    88,207.20x = 7,040,945,684.16
  5. Step 5: Solve for x
    x = 7,040,945,684.16/88,207.20
  6. Step 6: Final answer
    x = 79,822.80

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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.