Home / 87,711.15-121,041.41-47,424.90

Finding the Fourth Proportional to 87,711.15, 121,041.41 and 47,424.90

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Solution

The fourth proportional to 87,711.15, 121,041.41 and 47,424.90 is: 65,446.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,711.15 : 121,041.41 = 47,424.90 : x
  2. Step 2: Convert to fraction form
    87,711.15/121,041.41 = 47,424.90/x
  3. Step 3: Cross multiply
    87,711.15x = 121,041.41 × 47,424.90
  4. Step 4: Simplify right side
    87,711.15x = 5,740,376,765.11
  5. Step 5: Solve for x
    x = 5,740,376,765.11/87,711.15
  6. Step 6: Final answer
    x = 65,446.37

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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.