Home / 78,987,984.43-108,993,867.89-45,508,416.23

Finding the Fourth Proportional to 78,987,984.43, 108,993,867.89 and 45,508,416.23

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Solution

The fourth proportional to 78,987,984.43, 108,993,867.89 and 45,508,416.23 is: 62,796,111.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,987,984.43 : 108,993,867.89 = 45,508,416.23 : x
  2. Step 2: Convert to fraction form
    78,987,984.43/108,993,867.89 = 45,508,416.23/x
  3. Step 3: Cross multiply
    78,987,984.43x = 108,993,867.89 × 45,508,416.23
  4. Step 4: Simplify right side
    78,987,984.43x = 4,960,138,306,500,695
  5. Step 5: Solve for x
    x = 4,960,138,306,500,695/78,987,984.43
  6. Step 6: Final answer
    x = 62,796,111.87

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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.