Home / 83,406.40-125,258.88-76,731.04

Finding the Fourth Proportional to 83,406.40, 125,258.88 and 76,731.04

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Solution

The fourth proportional to 83,406.40, 125,258.88 and 76,731.04 is: 115,233.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,406.40 : 125,258.88 = 76,731.04 : x
  2. Step 2: Convert to fraction form
    83,406.40/125,258.88 = 76,731.04/x
  3. Step 3: Cross multiply
    83,406.40x = 125,258.88 × 76,731.04
  4. Step 4: Simplify right side
    83,406.40x = 9,611,244,131.64
  5. Step 5: Solve for x
    x = 9,611,244,131.64/83,406.40
  6. Step 6: Final answer
    x = 115,233.89

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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.