Home / 78,004.20-117,006.30-38,553.15

Finding the Fourth Proportional to 78,004.20, 117,006.30 and 38,553.15

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Solution

The fourth proportional to 78,004.20, 117,006.30 and 38,553.15 is: 57,829.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,004.20 : 117,006.30 = 38,553.15 : x
  2. Step 2: Convert to fraction form
    78,004.20/117,006.30 = 38,553.15/x
  3. Step 3: Cross multiply
    78,004.20x = 117,006.30 × 38,553.15
  4. Step 4: Simplify right side
    78,004.20x = 4,510,961,434.85
  5. Step 5: Solve for x
    x = 4,510,961,434.85/78,004.20
  6. Step 6: Final answer
    x = 57,829.73

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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.