Home / 51,129,631.20-76,737,992.40-20,859,218.40

Finding the Fourth Proportional to 51,129,631.20, 76,737,992.40 and 20,859,218.40

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Solution

The fourth proportional to 51,129,631.20, 76,737,992.40 and 20,859,218.40 is: 31,306,592.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,129,631.20 : 76,737,992.40 = 20,859,218.40 : x
  2. Step 2: Convert to fraction form
    51,129,631.20/76,737,992.40 = 20,859,218.40/x
  3. Step 3: Cross multiply
    51,129,631.20x = 76,737,992.40 × 20,859,218.40
  4. Step 4: Simplify right side
    51,129,631.20x = 1,600,694,543,049,140.25
  5. Step 5: Solve for x
    x = 1,600,694,543,049,140.25/51,129,631.20
  6. Step 6: Final answer
    x = 31,306,592.78

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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.