Home / 78,375.28-117,547.20-38,377.03

Finding the Fourth Proportional to 78,375.28, 117,547.20 and 38,377.03

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Solution

The fourth proportional to 78,375.28, 117,547.20 and 38,377.03 is: 57,557.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,375.28 : 117,547.20 = 38,377.03 : x
  2. Step 2: Convert to fraction form
    78,375.28/117,547.20 = 38,377.03/x
  3. Step 3: Cross multiply
    78,375.28x = 117,547.20 × 38,377.03
  4. Step 4: Simplify right side
    78,375.28x = 4,511,112,420.82
  5. Step 5: Solve for x
    x = 4,511,112,420.82/78,375.28
  6. Step 6: Final answer
    x = 57,557.85

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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.