Home / 78,126.44-117,195.12-38,672.96

Finding the Fourth Proportional to 78,126.44, 117,195.12 and 38,672.96

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Solution

The fourth proportional to 78,126.44, 117,195.12 and 38,672.96 is: 58,012.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,126.44 : 117,195.12 = 38,672.96 : x
  2. Step 2: Convert to fraction form
    78,126.44/117,195.12 = 38,672.96/x
  3. Step 3: Cross multiply
    78,126.44x = 117,195.12 × 38,672.96
  4. Step 4: Simplify right side
    78,126.44x = 4,532,281,601.98
  5. Step 5: Solve for x
    x = 4,532,281,601.98/78,126.44
  6. Step 6: Final answer
    x = 58,012.14

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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.