Home / 81,479.28-122,238.08-25,316.56

Finding the Fourth Proportional to 81,479.28, 122,238.08 and 25,316.56

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Solution

The fourth proportional to 81,479.28, 122,238.08 and 25,316.56 is: 37,980.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,479.28 : 122,238.08 = 25,316.56 : x
  2. Step 2: Convert to fraction form
    81,479.28/122,238.08 = 25,316.56/x
  3. Step 3: Cross multiply
    81,479.28x = 122,238.08 × 25,316.56
  4. Step 4: Simplify right side
    81,479.28x = 3,094,647,686.60
  5. Step 5: Solve for x
    x = 3,094,647,686.60/81,479.28
  6. Step 6: Final answer
    x = 37,980.79

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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.