Home / 80,571,641.70-120,857,462.55-69,612,147.30

Finding the Fourth Proportional to 80,571,641.70, 120,857,462.55 and 69,612,147.30

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Solution

The fourth proportional to 80,571,641.70, 120,857,462.55 and 69,612,147.30 is: 104,418,220.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,571,641.70 : 120,857,462.55 = 69,612,147.30 : x
  2. Step 2: Convert to fraction form
    80,571,641.70/120,857,462.55 = 69,612,147.30/x
  3. Step 3: Cross multiply
    80,571,641.70x = 120,857,462.55 × 69,612,147.30
  4. Step 4: Simplify right side
    80,571,641.70x = 8,413,147,485,334,833
  5. Step 5: Solve for x
    x = 8,413,147,485,334,833/80,571,641.70
  6. Step 6: Final answer
    x = 104,418,220.95

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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.