Home / 78,961.44-108,930.24-45,408

Finding the Fourth Proportional to 78,961.44, 108,930.24 and 45,408

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Solution

The fourth proportional to 78,961.44, 108,930.24 and 45,408 is: 62,642.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,961.44 : 108,930.24 = 45,408 : x
  2. Step 2: Convert to fraction form
    78,961.44/108,930.24 = 45,408/x
  3. Step 3: Cross multiply
    78,961.44x = 108,930.24 × 45,408
  4. Step 4: Simplify right side
    78,961.44x = 4,946,304,337.92
  5. Step 5: Solve for x
    x = 4,946,304,337.92/78,961.44
  6. Step 6: Final answer
    x = 62,642.02

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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.