Home / 81,451.15-112,402.42-49,620.04

Finding the Fourth Proportional to 81,451.15, 112,402.42 and 49,620.04

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Solution

The fourth proportional to 81,451.15, 112,402.42 and 49,620.04 is: 68,475.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,451.15 : 112,402.42 = 49,620.04 : x
  2. Step 2: Convert to fraction form
    81,451.15/112,402.42 = 49,620.04/x
  3. Step 3: Cross multiply
    81,451.15x = 112,402.42 × 49,620.04
  4. Step 4: Simplify right side
    81,451.15x = 5,577,412,171.44
  5. Step 5: Solve for x
    x = 5,577,412,171.44/81,451.15
  6. Step 6: Final answer
    x = 68,475.55

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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.