Home / 80,774,426.70-121,161,640.05-71,846,217.90

Finding the Fourth Proportional to 80,774,426.70, 121,161,640.05 and 71,846,217.90

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Solution

The fourth proportional to 80,774,426.70, 121,161,640.05 and 71,846,217.90 is: 107,769,326.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,774,426.70 : 121,161,640.05 = 71,846,217.90 : x
  2. Step 2: Convert to fraction form
    80,774,426.70/121,161,640.05 = 71,846,217.90/x
  3. Step 3: Cross multiply
    80,774,426.70x = 121,161,640.05 × 71,846,217.90
  4. Step 4: Simplify right side
    80,774,426.70x = 8,705,005,592,153,667
  5. Step 5: Solve for x
    x = 8,705,005,592,153,667/80,774,426.70
  6. Step 6: Final answer
    x = 107,769,326.85

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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.