Home / 83,885.10-125,536.05-76,886.70

Finding the Fourth Proportional to 83,885.10, 125,536.05 and 76,886.70

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Solution

The fourth proportional to 83,885.10, 125,536.05 and 76,886.70 is: 115,062.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,885.10 : 125,536.05 = 76,886.70 : x
  2. Step 2: Convert to fraction form
    83,885.10/125,536.05 = 76,886.70/x
  3. Step 3: Cross multiply
    83,885.10x = 125,536.05 × 76,886.70
  4. Step 4: Simplify right side
    83,885.10x = 9,652,052,615.54
  5. Step 5: Solve for x
    x = 9,652,052,615.54/83,885.10
  6. Step 6: Final answer
    x = 115,062.78

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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.