Home / 77,305.20-115,890.30-29,952.60

Finding the Fourth Proportional to 77,305.20, 115,890.30 and 29,952.60

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Solution

The fourth proportional to 77,305.20, 115,890.30 and 29,952.60 is: 44,902.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,305.20 : 115,890.30 = 29,952.60 : x
  2. Step 2: Convert to fraction form
    77,305.20/115,890.30 = 29,952.60/x
  3. Step 3: Cross multiply
    77,305.20x = 115,890.30 × 29,952.60
  4. Step 4: Simplify right side
    77,305.20x = 3,471,215,799.78
  5. Step 5: Solve for x
    x = 3,471,215,799.78/77,305.20
  6. Step 6: Final answer
    x = 44,902.75

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1.5x scale

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.