Home / 83,640.45-125,419.14-30,330.30

Finding the Fourth Proportional to 83,640.45, 125,419.14 and 30,330.30

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Solution

The fourth proportional to 83,640.45, 125,419.14 and 30,330.30 is: 45,480.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,640.45 : 125,419.14 = 30,330.30 : x
  2. Step 2: Convert to fraction form
    83,640.45/125,419.14 = 30,330.30/x
  3. Step 3: Cross multiply
    83,640.45x = 125,419.14 × 30,330.30
  4. Step 4: Simplify right side
    83,640.45x = 3,804,000,141.94
  5. Step 5: Solve for x
    x = 3,804,000,141.94/83,640.45
  6. Step 6: Final answer
    x = 45,480.39

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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.