Home / 72,011,847.50-99,375,986.40-38,972,105.18

Finding the Fourth Proportional to 72,011,847.50, 99,375,986.40 and 38,972,105.18

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Solution

The fourth proportional to 72,011,847.50, 99,375,986.40 and 38,972,105.18 is: 53,781,308.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,011,847.50 : 99,375,986.40 = 38,972,105.18 : x
  2. Step 2: Convert to fraction form
    72,011,847.50/99,375,986.40 = 38,972,105.18/x
  3. Step 3: Cross multiply
    72,011,847.50x = 99,375,986.40 × 38,972,105.18
  4. Step 4: Simplify right side
    72,011,847.50x = 3,872,891,394,125,947
  5. Step 5: Solve for x
    x = 3,872,891,394,125,947/72,011,847.50
  6. Step 6: Final answer
    x = 53,781,308.61

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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.