Home / 86,380.20-119,202.48-48,139.92

Finding the Fourth Proportional to 86,380.20, 119,202.48 and 48,139.92

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Solution

The fourth proportional to 86,380.20, 119,202.48 and 48,139.92 is: 66,431.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,380.20 : 119,202.48 = 48,139.92 : x
  2. Step 2: Convert to fraction form
    86,380.20/119,202.48 = 48,139.92/x
  3. Step 3: Cross multiply
    86,380.20x = 119,202.48 × 48,139.92
  4. Step 4: Simplify right side
    86,380.20x = 5,738,397,851.00
  5. Step 5: Solve for x
    x = 5,738,397,851.00/86,380.20
  6. Step 6: Final answer
    x = 66,431.87

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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.