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Finding the Fourth Proportional to 87,115.30, 130,672.95 and 53,727.10

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Solution

The fourth proportional to 87,115.30, 130,672.95 and 53,727.10 is: 80,590.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,115.30 : 130,672.95 = 53,727.10 : x
  2. Step 2: Convert to fraction form
    87,115.30/130,672.95 = 53,727.10/x
  3. Step 3: Cross multiply
    87,115.30x = 130,672.95 × 53,727.10
  4. Step 4: Simplify right side
    87,115.30x = 7,020,678,651.95
  5. Step 5: Solve for x
    x = 7,020,678,651.95/87,115.30
  6. Step 6: Final answer
    x = 80,590.65

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1.5x scale

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.