Home / 87,937.80-121,409.19-67,756.38

Finding the Fourth Proportional to 87,937.80, 121,409.19 and 67,756.38

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Solution

The fourth proportional to 87,937.80, 121,409.19 and 67,756.38 is: 93,546.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,937.80 : 121,409.19 = 67,756.38 : x
  2. Step 2: Convert to fraction form
    87,937.80/121,409.19 = 67,756.38/x
  3. Step 3: Cross multiply
    87,937.80x = 121,409.19 × 67,756.38
  4. Step 4: Simplify right side
    87,937.80x = 8,226,247,213.13
  5. Step 5: Solve for x
    x = 8,226,247,213.13/87,937.80
  6. Step 6: Final answer
    x = 93,546.20

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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.