Home / 91,564.15-126,343.92-51,279.61

Finding the Fourth Proportional to 91,564.15, 126,343.92 and 51,279.61

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Solution

The fourth proportional to 91,564.15, 126,343.92 and 51,279.61 is: 70,757.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,564.15 : 126,343.92 = 51,279.61 : x
  2. Step 2: Convert to fraction form
    91,564.15/126,343.92 = 51,279.61/x
  3. Step 3: Cross multiply
    91,564.15x = 126,343.92 × 51,279.61
  4. Step 4: Simplify right side
    91,564.15x = 6,478,866,943.47
  5. Step 5: Solve for x
    x = 6,478,866,943.47/91,564.15
  6. Step 6: Final answer
    x = 70,757.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.