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Finding the Fourth Proportional to 79,921.53, 110,285.73 and 45,930.11

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Solution

The fourth proportional to 79,921.53, 110,285.73 and 45,930.11 is: 63,380.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,921.53 : 110,285.73 = 45,930.11 : x
  2. Step 2: Convert to fraction form
    79,921.53/110,285.73 = 45,930.11/x
  3. Step 3: Cross multiply
    79,921.53x = 110,285.73 × 45,930.11
  4. Step 4: Simplify right side
    79,921.53x = 5,065,435,158.90
  5. Step 5: Solve for x
    x = 5,065,435,158.90/79,921.53
  6. Step 6: Final answer
    x = 63,380.11

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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.