Home / 87,923.60-131,982.60-54,681.20

Finding the Fourth Proportional to 87,923.60, 131,982.60 and 54,681.20

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Solution

The fourth proportional to 87,923.60, 131,982.60 and 54,681.20 is: 82,082.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,923.60 : 131,982.60 = 54,681.20 : x
  2. Step 2: Convert to fraction form
    87,923.60/131,982.60 = 54,681.20/x
  3. Step 3: Cross multiply
    87,923.60x = 131,982.60 × 54,681.20
  4. Step 4: Simplify right side
    87,923.60x = 7,216,966,947.12
  5. Step 5: Solve for x
    x = 7,216,966,947.12/87,923.60
  6. Step 6: Final answer
    x = 82,082.25

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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.