Home / 87,806.13-121,172.46-47,520.18

Finding the Fourth Proportional to 87,806.13, 121,172.46 and 47,520.18

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Solution

The fourth proportional to 87,806.13, 121,172.46 and 47,520.18 is: 65,577.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,806.13 : 121,172.46 = 47,520.18 : x
  2. Step 2: Convert to fraction form
    87,806.13/121,172.46 = 47,520.18/x
  3. Step 3: Cross multiply
    87,806.13x = 121,172.46 × 47,520.18
  4. Step 4: Simplify right side
    87,806.13x = 5,758,137,110.24
  5. Step 5: Solve for x
    x = 5,758,137,110.24/87,806.13
  6. Step 6: Final answer
    x = 65,577.85

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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.