Home / 87,890.89-121,296.89-49,657.46

Finding the Fourth Proportional to 87,890.89, 121,296.89 and 49,657.46

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Solution

The fourth proportional to 87,890.89, 121,296.89 and 49,657.46 is: 68,531.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,890.89 : 121,296.89 = 49,657.46 : x
  2. Step 2: Convert to fraction form
    87,890.89/121,296.89 = 49,657.46/x
  3. Step 3: Cross multiply
    87,890.89x = 121,296.89 × 49,657.46
  4. Step 4: Simplify right side
    87,890.89x = 6,023,295,463.30
  5. Step 5: Solve for x
    x = 6,023,295,463.30/87,890.89
  6. Step 6: Final answer
    x = 68,531.51

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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.