Home / 81,341.43-121,966.88-25,165.91

Finding the Fourth Proportional to 81,341.43, 121,966.88 and 25,165.91

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Solution

The fourth proportional to 81,341.43, 121,966.88 and 25,165.91 is: 37,734.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,341.43 : 121,966.88 = 25,165.91 : x
  2. Step 2: Convert to fraction form
    81,341.43/121,966.88 = 25,165.91/x
  3. Step 3: Cross multiply
    81,341.43x = 121,966.88 × 25,165.91
  4. Step 4: Simplify right side
    81,341.43x = 3,069,406,789.40
  5. Step 5: Solve for x
    x = 3,069,406,789.40/81,341.43
  6. Step 6: Final answer
    x = 37,734.85

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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.