Home / 79,278.50-118,917.66-20,114.04

Finding the Fourth Proportional to 79,278.50, 118,917.66 and 20,114.04

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Solution

The fourth proportional to 79,278.50, 118,917.66 and 20,114.04 is: 30,171.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,278.50 : 118,917.66 = 20,114.04 : x
  2. Step 2: Convert to fraction form
    79,278.50/118,917.66 = 20,114.04/x
  3. Step 3: Cross multiply
    79,278.50x = 118,917.66 × 20,114.04
  4. Step 4: Simplify right side
    79,278.50x = 2,391,914,569.95
  5. Step 5: Solve for x
    x = 2,391,914,569.95/79,278.50
  6. Step 6: Final answer
    x = 30,171.04

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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.