Home / 87,195.52-130,850.70-47,780.30

Finding the Fourth Proportional to 87,195.52, 130,850.70 and 47,780.30

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Solution

The fourth proportional to 87,195.52, 130,850.70 and 47,780.30 is: 71,701.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,195.52 : 130,850.70 = 47,780.30 : x
  2. Step 2: Convert to fraction form
    87,195.52/130,850.70 = 47,780.30/x
  3. Step 3: Cross multiply
    87,195.52x = 130,850.70 × 47,780.30
  4. Step 4: Simplify right side
    87,195.52x = 6,252,085,701.21
  5. Step 5: Solve for x
    x = 6,252,085,701.21/87,195.52
  6. Step 6: Final answer
    x = 71,701.91

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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.