Home / 81,108.88-121,663.20-25,700.56

Finding the Fourth Proportional to 81,108.88, 121,663.20 and 25,700.56

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Solution

The fourth proportional to 81,108.88, 121,663.20 and 25,700.56 is: 38,550.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,108.88 : 121,663.20 = 25,700.56 : x
  2. Step 2: Convert to fraction form
    81,108.88/121,663.20 = 25,700.56/x
  3. Step 3: Cross multiply
    81,108.88x = 121,663.20 × 25,700.56
  4. Step 4: Simplify right side
    81,108.88x = 3,126,812,371.39
  5. Step 5: Solve for x
    x = 3,126,812,371.39/81,108.88
  6. Step 6: Final answer
    x = 38,550.80

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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.