Home / 87,740.45-121,082.99-49,499.87

Finding the Fourth Proportional to 87,740.45, 121,082.99 and 49,499.87

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Solution

The fourth proportional to 87,740.45, 121,082.99 and 49,499.87 is: 68,310.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,740.45 : 121,082.99 = 49,499.87 : x
  2. Step 2: Convert to fraction form
    87,740.45/121,082.99 = 49,499.87/x
  3. Step 3: Cross multiply
    87,740.45x = 121,082.99 × 49,499.87
  4. Step 4: Simplify right side
    87,740.45x = 5,993,592,597.86
  5. Step 5: Solve for x
    x = 5,993,592,597.86/87,740.45
  6. Step 6: Final answer
    x = 68,310.48

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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.