Home / 78,793.28-108,734.68-42,983.21

Finding the Fourth Proportional to 78,793.28, 108,734.68 and 42,983.21

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Solution

The fourth proportional to 78,793.28, 108,734.68 and 42,983.21 is: 59,316.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,793.28 : 108,734.68 = 42,983.21 : x
  2. Step 2: Convert to fraction form
    78,793.28/108,734.68 = 42,983.21/x
  3. Step 3: Cross multiply
    78,793.28x = 108,734.68 × 42,983.21
  4. Step 4: Simplify right side
    78,793.28x = 4,673,765,177.77
  5. Step 5: Solve for x
    x = 4,673,765,177.77/78,793.28
  6. Step 6: Final answer
    x = 59,316.80

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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.