Home / 87,482.13-120,696.46-71,321.65

Finding the Fourth Proportional to 87,482.13, 120,696.46 and 71,321.65

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Solution

The fourth proportional to 87,482.13, 120,696.46 and 71,321.65 is: 98,400.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,482.13 : 120,696.46 = 71,321.65 : x
  2. Step 2: Convert to fraction form
    87,482.13/120,696.46 = 71,321.65/x
  3. Step 3: Cross multiply
    87,482.13x = 120,696.46 × 71,321.65
  4. Step 4: Simplify right side
    87,482.13x = 8,608,271,276.42
  5. Step 5: Solve for x
    x = 8,608,271,276.42/87,482.13
  6. Step 6: Final answer
    x = 98,400.34

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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.