Home / 87,790.59-121,152.57-49,557.78

Finding the Fourth Proportional to 87,790.59, 121,152.57 and 49,557.78

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Solution

The fourth proportional to 87,790.59, 121,152.57 and 49,557.78 is: 68,390.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,790.59 : 121,152.57 = 49,557.78 : x
  2. Step 2: Convert to fraction form
    87,790.59/121,152.57 = 49,557.78/x
  3. Step 3: Cross multiply
    87,790.59x = 121,152.57 × 49,557.78
  4. Step 4: Simplify right side
    87,790.59x = 6,004,052,410.49
  5. Step 5: Solve for x
    x = 6,004,052,410.49/87,790.59
  6. Step 6: Final answer
    x = 68,390.61

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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.