Home / 87,981.88-121,386.45-49,737.73

Finding the Fourth Proportional to 87,981.88, 121,386.45 and 49,737.73

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Solution

The fourth proportional to 87,981.88, 121,386.45 and 49,737.73 is: 68,621.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,981.88 : 121,386.45 = 49,737.73 : x
  2. Step 2: Convert to fraction form
    87,981.88/121,386.45 = 49,737.73/x
  3. Step 3: Cross multiply
    87,981.88x = 121,386.45 × 49,737.73
  4. Step 4: Simplify right side
    87,981.88x = 6,037,486,475.76
  5. Step 5: Solve for x
    x = 6,037,486,475.76/87,981.88
  6. Step 6: Final answer
    x = 68,621.93

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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.