Home / 52,961.78-79,442.60-13,518.90

Finding the Fourth Proportional to 52,961.78, 79,442.60 and 13,518.90

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Solution

The fourth proportional to 52,961.78, 79,442.60 and 13,518.90 is: 20,278.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,961.78 : 79,442.60 = 13,518.90 : x
  2. Step 2: Convert to fraction form
    52,961.78/79,442.60 = 13,518.90/x
  3. Step 3: Cross multiply
    52,961.78x = 79,442.60 × 13,518.90
  4. Step 4: Simplify right side
    52,961.78x = 1,073,976,565.14
  5. Step 5: Solve for x
    x = 1,073,976,565.14/52,961.78
  6. Step 6: Final answer
    x = 20,278.33

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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.