Home / 87,815.95-121,186.29-47,529.70

Finding the Fourth Proportional to 87,815.95, 121,186.29 and 47,529.70

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Solution

The fourth proportional to 87,815.95, 121,186.29 and 47,529.70 is: 65,591.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,815.95 : 121,186.29 = 47,529.70 : x
  2. Step 2: Convert to fraction form
    87,815.95/121,186.29 = 47,529.70/x
  3. Step 3: Cross multiply
    87,815.95x = 121,186.29 × 47,529.70
  4. Step 4: Simplify right side
    87,815.95x = 5,759,948,007.81
  5. Step 5: Solve for x
    x = 5,759,948,007.81/87,815.95
  6. Step 6: Final answer
    x = 65,591.14

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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.