Home / 78,102.30-117,084.33-36,538.14

Finding the Fourth Proportional to 78,102.30, 117,084.33 and 36,538.14

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Solution

The fourth proportional to 78,102.30, 117,084.33 and 36,538.14 is: 54,774.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,102.30 : 117,084.33 = 36,538.14 : x
  2. Step 2: Convert to fraction form
    78,102.30/117,084.33 = 36,538.14/x
  3. Step 3: Cross multiply
    78,102.30x = 117,084.33 × 36,538.14
  4. Step 4: Simplify right side
    78,102.30x = 4,278,043,641.35
  5. Step 5: Solve for x
    x = 4,278,043,641.35/78,102.30
  6. Step 6: Final answer
    x = 54,774.87

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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.