Home / 87,287.64-130,988.86-47,872.42

Finding the Fourth Proportional to 87,287.64, 130,988.86 and 47,872.42

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Solution

The fourth proportional to 87,287.64, 130,988.86 and 47,872.42 is: 71,840.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,287.64 : 130,988.86 = 47,872.42 : x
  2. Step 2: Convert to fraction form
    87,287.64/130,988.86 = 47,872.42/x
  3. Step 3: Cross multiply
    87,287.64x = 130,988.86 × 47,872.42
  4. Step 4: Simplify right side
    87,287.64x = 6,270,753,721.24
  5. Step 5: Solve for x
    x = 6,270,753,721.24/87,287.64
  6. Step 6: Final answer
    x = 71,840.11

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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.