Home / 87,785.19-121,143.03-49,557.11

Finding the Fourth Proportional to 87,785.19, 121,143.03 and 49,557.11

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Solution

The fourth proportional to 87,785.19, 121,143.03 and 49,557.11 is: 68,388.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,785.19 : 121,143.03 = 49,557.11 : x
  2. Step 2: Convert to fraction form
    87,785.19/121,143.03 = 49,557.11/x
  3. Step 3: Cross multiply
    87,785.19x = 121,143.03 × 49,557.11
  4. Step 4: Simplify right side
    87,785.19x = 6,003,497,857.73
  5. Step 5: Solve for x
    x = 6,003,497,857.73/87,785.19
  6. Step 6: Final answer
    x = 68,388.50

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1.5x scale

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.