Home / 81,281.82-121,934.36-25,126.80

Finding the Fourth Proportional to 81,281.82, 121,934.36 and 25,126.80

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Solution

The fourth proportional to 81,281.82, 121,934.36 and 25,126.80 is: 37,693.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,281.82 : 121,934.36 = 25,126.80 : x
  2. Step 2: Convert to fraction form
    81,281.82/121,934.36 = 25,126.80/x
  3. Step 3: Cross multiply
    81,281.82x = 121,934.36 × 25,126.80
  4. Step 4: Simplify right side
    81,281.82x = 3,063,820,276.85
  5. Step 5: Solve for x
    x = 3,063,820,276.85/81,281.82
  6. Step 6: Final answer
    x = 37,693.80

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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.