Home / 78,987,984.62-108,993,868.14-45,508,416.42

Finding the Fourth Proportional to 78,987,984.62, 108,993,868.14 and 45,508,416.42

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Solution

The fourth proportional to 78,987,984.62, 108,993,868.14 and 45,508,416.42 is: 62,796,112.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,987,984.62 : 108,993,868.14 = 45,508,416.42 : x
  2. Step 2: Convert to fraction form
    78,987,984.62/108,993,868.14 = 45,508,416.42/x
  3. Step 3: Cross multiply
    78,987,984.62x = 108,993,868.14 × 45,508,416.42
  4. Step 4: Simplify right side
    78,987,984.62x = 4,960,138,338,541,691
  5. Step 5: Solve for x
    x = 4,960,138,338,541,691/78,987,984.62
  6. Step 6: Final answer
    x = 62,796,112.13

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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.