Home / 86,872.20-130,327.41-49,449.90

Finding the Fourth Proportional to 86,872.20, 130,327.41 and 49,449.90

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Solution

The fourth proportional to 86,872.20, 130,327.41 and 49,449.90 is: 74,185.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,872.20 : 130,327.41 = 49,449.90 : x
  2. Step 2: Convert to fraction form
    86,872.20/130,327.41 = 49,449.90/x
  3. Step 3: Cross multiply
    86,872.20x = 130,327.41 × 49,449.90
  4. Step 4: Simplify right side
    86,872.20x = 6,444,677,391.76
  5. Step 5: Solve for x
    x = 6,444,677,391.76/86,872.20
  6. Step 6: Final answer
    x = 74,185.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.