Home / 87,406.40-131,148.12-45,843.68

Finding the Fourth Proportional to 87,406.40, 131,148.12 and 45,843.68

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Solution

The fourth proportional to 87,406.40, 131,148.12 and 45,843.68 is: 68,785.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,406.40 : 131,148.12 = 45,843.68 : x
  2. Step 2: Convert to fraction form
    87,406.40/131,148.12 = 45,843.68/x
  3. Step 3: Cross multiply
    87,406.40x = 131,148.12 × 45,843.68
  4. Step 4: Simplify right side
    87,406.40x = 6,012,312,445.88
  5. Step 5: Solve for x
    x = 6,012,312,445.88/87,406.40
  6. Step 6: Final answer
    x = 68,785.72

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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.