Home / 87,792.59-121,155.33-49,559.78

Finding the Fourth Proportional to 87,792.59, 121,155.33 and 49,559.78

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Solution

The fourth proportional to 87,792.59, 121,155.33 and 49,559.78 is: 68,393.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,792.59 : 121,155.33 = 49,559.78 : x
  2. Step 2: Convert to fraction form
    87,792.59/121,155.33 = 49,559.78/x
  3. Step 3: Cross multiply
    87,792.59x = 121,155.33 × 49,559.78
  4. Step 4: Simplify right side
    87,792.59x = 6,004,431,500.63
  5. Step 5: Solve for x
    x = 6,004,431,500.63/87,792.59
  6. Step 6: Final answer
    x = 68,393.37

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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.