Home / 81,323.30-121,924.69-38,607.59

Finding the Fourth Proportional to 81,323.30, 121,924.69 and 38,607.59

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Solution

The fourth proportional to 81,323.30, 121,924.69 and 38,607.59 is: 57,882.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,323.30 : 121,924.69 = 38,607.59 : x
  2. Step 2: Convert to fraction form
    81,323.30/121,924.69 = 38,607.59/x
  3. Step 3: Cross multiply
    81,323.30x = 121,924.69 × 38,607.59
  4. Step 4: Simplify right side
    81,323.30x = 4,707,218,442.40
  5. Step 5: Solve for x
    x = 4,707,218,442.40/81,323.30
  6. Step 6: Final answer
    x = 57,882.78

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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.