Home / 87,810.10-131,715.15-52,731.70

Finding the Fourth Proportional to 87,810.10, 131,715.15 and 52,731.70

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Solution

The fourth proportional to 87,810.10, 131,715.15 and 52,731.70 is: 79,097.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,810.10 : 131,715.15 = 52,731.70 : x
  2. Step 2: Convert to fraction form
    87,810.10/131,715.15 = 52,731.70/x
  3. Step 3: Cross multiply
    87,810.10x = 131,715.15 × 52,731.70
  4. Step 4: Simplify right side
    87,810.10x = 6,945,563,775.26
  5. Step 5: Solve for x
    x = 6,945,563,775.26/87,810.10
  6. Step 6: Final answer
    x = 79,097.55

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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.