Home / 7,172,134.80-9,897,257.88-3,908,879.52

Finding the Fourth Proportional to 7,172,134.80, 9,897,257.88 and 3,908,879.52

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Solution

The fourth proportional to 7,172,134.80, 9,897,257.88 and 3,908,879.52 is: 5,394,096.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172,134.80 : 9,897,257.88 = 3,908,879.52 : x
  2. Step 2: Convert to fraction form
    7,172,134.80/9,897,257.88 = 3,908,879.52/x
  3. Step 3: Cross multiply
    7,172,134.80x = 9,897,257.88 × 3,908,879.52
  4. Step 4: Simplify right side
    7,172,134.80x = 38,687,188,631,290.62
  5. Step 5: Solve for x
    x = 38,687,188,631,290.62/7,172,134.80
  6. Step 6: Final answer
    x = 5,394,096.70

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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.