Home / 81,218.79-121,839.66-25,063.47

Finding the Fourth Proportional to 81,218.79, 121,839.66 and 25,063.47

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Solution

The fourth proportional to 81,218.79, 121,839.66 and 25,063.47 is: 37,598.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,218.79 : 121,839.66 = 25,063.47 : x
  2. Step 2: Convert to fraction form
    81,218.79/121,839.66 = 25,063.47/x
  3. Step 3: Cross multiply
    81,218.79x = 121,839.66 × 25,063.47
  4. Step 4: Simplify right side
    81,218.79x = 3,053,724,663.22
  5. Step 5: Solve for x
    x = 3,053,724,663.22/81,218.79
  6. Step 6: Final answer
    x = 37,598.75

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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.