Home / 78,468,175.80-108,285,981.14-48,687,747.66

Finding the Fourth Proportional to 78,468,175.80, 108,285,981.14 and 48,687,747.66

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Solution

The fourth proportional to 78,468,175.80, 108,285,981.14 and 48,687,747.66 is: 67,189,028.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,468,175.80 : 108,285,981.14 = 48,687,747.66 : x
  2. Step 2: Convert to fraction form
    78,468,175.80/108,285,981.14 = 48,687,747.66/x
  3. Step 3: Cross multiply
    78,468,175.80x = 108,285,981.14 × 48,687,747.66
  4. Step 4: Simplify right side
    78,468,175.80x = 5,272,200,524,859,839
  5. Step 5: Solve for x
    x = 5,272,200,524,859,839/78,468,175.80
  6. Step 6: Final answer
    x = 67,189,028.81

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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.