Home / 83,968.13-125,904.78-31,356.20

Finding the Fourth Proportional to 83,968.13, 125,904.78 and 31,356.20

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Solution

The fourth proportional to 83,968.13, 125,904.78 and 31,356.20 is: 47,016.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,968.13 : 125,904.78 = 31,356.20 : x
  2. Step 2: Convert to fraction form
    83,968.13/125,904.78 = 31,356.20/x
  3. Step 3: Cross multiply
    83,968.13x = 125,904.78 × 31,356.20
  4. Step 4: Simplify right side
    83,968.13x = 3,947,894,833.11
  5. Step 5: Solve for x
    x = 3,947,894,833.11/83,968.13
  6. Step 6: Final answer
    x = 47,016.59

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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.