Home / 87,753.40-121,089.25-49,510.74

Finding the Fourth Proportional to 87,753.40, 121,089.25 and 49,510.74

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Solution

The fourth proportional to 87,753.40, 121,089.25 and 49,510.74 is: 68,318.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,753.40 : 121,089.25 = 49,510.74 : x
  2. Step 2: Convert to fraction form
    87,753.40/121,089.25 = 49,510.74/x
  3. Step 3: Cross multiply
    87,753.40x = 121,089.25 × 49,510.74
  4. Step 4: Simplify right side
    87,753.40x = 5,995,219,028.77
  5. Step 5: Solve for x
    x = 5,995,219,028.77/87,753.40
  6. Step 6: Final answer
    x = 68,318.94

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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.