Home / 78,375.54-108,158.22-42,565.56

Finding the Fourth Proportional to 78,375.54, 108,158.22 and 42,565.56

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Solution

The fourth proportional to 78,375.54, 108,158.22 and 42,565.56 is: 58,740.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,375.54 : 108,158.22 = 42,565.56 : x
  2. Step 2: Convert to fraction form
    78,375.54/108,158.22 = 42,565.56/x
  3. Step 3: Cross multiply
    78,375.54x = 108,158.22 × 42,565.56
  4. Step 4: Simplify right side
    78,375.54x = 4,603,815,202.90
  5. Step 5: Solve for x
    x = 4,603,815,202.90/78,375.54
  6. Step 6: Final answer
    x = 58,740.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.