Home / 80,760.38-121,145.42-25,356.38

Finding the Fourth Proportional to 80,760.38, 121,145.42 and 25,356.38

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Solution

The fourth proportional to 80,760.38, 121,145.42 and 25,356.38 is: 38,036.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,760.38 : 121,145.42 = 25,356.38 : x
  2. Step 2: Convert to fraction form
    80,760.38/121,145.42 = 25,356.38/x
  3. Step 3: Cross multiply
    80,760.38x = 121,145.42 × 25,356.38
  4. Step 4: Simplify right side
    80,760.38x = 3,071,808,762.44
  5. Step 5: Solve for x
    x = 3,071,808,762.44/80,760.38
  6. Step 6: Final answer
    x = 38,036.09

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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.