Home / 87,918.40-131,877.18-31,758.47

Finding the Fourth Proportional to 87,918.40, 131,877.18 and 31,758.47

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Solution

The fourth proportional to 87,918.40, 131,877.18 and 31,758.47 is: 47,637.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,918.40 : 131,877.18 = 31,758.47 : x
  2. Step 2: Convert to fraction form
    87,918.40/131,877.18 = 31,758.47/x
  3. Step 3: Cross multiply
    87,918.40x = 131,877.18 × 31,758.47
  4. Step 4: Simplify right side
    87,918.40x = 4,188,217,464.71
  5. Step 5: Solve for x
    x = 4,188,217,464.71/87,918.40
  6. Step 6: Final answer
    x = 47,637.55

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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.