Home / 87,120.16-130,565.04-31,662.88

Finding the Fourth Proportional to 87,120.16, 130,565.04 and 31,662.88

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Solution

The fourth proportional to 87,120.16, 130,565.04 and 31,662.88 is: 47,452.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,120.16 : 130,565.04 = 31,662.88 : x
  2. Step 2: Convert to fraction form
    87,120.16/130,565.04 = 31,662.88/x
  3. Step 3: Cross multiply
    87,120.16x = 130,565.04 × 31,662.88
  4. Step 4: Simplify right side
    87,120.16x = 4,134,065,193.72
  5. Step 5: Solve for x
    x = 4,134,065,193.72/87,120.16
  6. Step 6: Final answer
    x = 47,452.45

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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.