Home / 87,790.09-121,151.88-49,557.28

Finding the Fourth Proportional to 87,790.09, 121,151.88 and 49,557.28

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Solution

The fourth proportional to 87,790.09, 121,151.88 and 49,557.28 is: 68,389.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,790.09 : 121,151.88 = 49,557.28 : x
  2. Step 2: Convert to fraction form
    87,790.09/121,151.88 = 49,557.28/x
  3. Step 3: Cross multiply
    87,790.09x = 121,151.88 × 49,557.28
  4. Step 4: Simplify right side
    87,790.09x = 6,003,957,639.69
  5. Step 5: Solve for x
    x = 6,003,957,639.69/87,790.09
  6. Step 6: Final answer
    x = 68,389.92

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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.