Home / 87,270.66-130,923.27-28,101.78

Finding the Fourth Proportional to 87,270.66, 130,923.27 and 28,101.78

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Solution

The fourth proportional to 87,270.66, 130,923.27 and 28,101.78 is: 42,158.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,270.66 : 130,923.27 = 28,101.78 : x
  2. Step 2: Convert to fraction form
    87,270.66/130,923.27 = 28,101.78/x
  3. Step 3: Cross multiply
    87,270.66x = 130,923.27 × 28,101.78
  4. Step 4: Simplify right side
    87,270.66x = 3,679,176,930.42
  5. Step 5: Solve for x
    x = 3,679,176,930.42/87,270.66
  6. Step 6: Final answer
    x = 42,158.23

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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.