Home / 87,657.11-120,966.85-47,370.86

Finding the Fourth Proportional to 87,657.11, 120,966.85 and 47,370.86

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Solution

The fourth proportional to 87,657.11, 120,966.85 and 47,370.86 is: 65,371.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,657.11 : 120,966.85 = 47,370.86 : x
  2. Step 2: Convert to fraction form
    87,657.11/120,966.85 = 47,370.86/x
  3. Step 3: Cross multiply
    87,657.11x = 120,966.85 × 47,370.86
  4. Step 4: Simplify right side
    87,657.11x = 5,730,303,715.99
  5. Step 5: Solve for x
    x = 5,730,303,715.99/87,657.11
  6. Step 6: Final answer
    x = 65,371.81

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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.