Home / 78,753.87-108,682.97-42,945.85

Finding the Fourth Proportional to 78,753.87, 108,682.97 and 42,945.85

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Solution

The fourth proportional to 78,753.87, 108,682.97 and 42,945.85 is: 59,266.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,753.87 : 108,682.97 = 42,945.85 : x
  2. Step 2: Convert to fraction form
    78,753.87/108,682.97 = 42,945.85/x
  3. Step 3: Cross multiply
    78,753.87x = 108,682.97 × 42,945.85
  4. Step 4: Simplify right side
    78,753.87x = 4,667,481,836.96
  5. Step 5: Solve for x
    x = 4,667,481,836.96/78,753.87
  6. Step 6: Final answer
    x = 59,266.70

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1.5x scale

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.