Home / 87,810.40-131,715.60-40,425.40

Finding the Fourth Proportional to 87,810.40, 131,715.60 and 40,425.40

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Solution

The fourth proportional to 87,810.40, 131,715.60 and 40,425.40 is: 60,638.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,810.40 : 131,715.60 = 40,425.40 : x
  2. Step 2: Convert to fraction form
    87,810.40/131,715.60 = 40,425.40/x
  3. Step 3: Cross multiply
    87,810.40x = 131,715.60 × 40,425.40
  4. Step 4: Simplify right side
    87,810.40x = 5,324,655,816.24
  5. Step 5: Solve for x
    x = 5,324,655,816.24/87,810.40
  6. Step 6: Final answer
    x = 60,638.10

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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.