Home / 87,818.52-131,748.64-28,654.20

Finding the Fourth Proportional to 87,818.52, 131,748.64 and 28,654.20

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Solution

The fourth proportional to 87,818.52, 131,748.64 and 28,654.20 is: 42,988.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,818.52 : 131,748.64 = 28,654.20 : x
  2. Step 2: Convert to fraction form
    87,818.52/131,748.64 = 28,654.20/x
  3. Step 3: Cross multiply
    87,818.52x = 131,748.64 × 28,654.20
  4. Step 4: Simplify right side
    87,818.52x = 3,775,151,880.29
  5. Step 5: Solve for x
    x = 3,775,151,880.29/87,818.52
  6. Step 6: Final answer
    x = 42,988.11

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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.