Home / 78,936.91-108,934.50-43,129.14

Finding the Fourth Proportional to 78,936.91, 108,934.50 and 43,129.14

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Solution

The fourth proportional to 78,936.91, 108,934.50 and 43,129.14 is: 59,519.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,936.91 : 108,934.50 = 43,129.14 : x
  2. Step 2: Convert to fraction form
    78,936.91/108,934.50 = 43,129.14/x
  3. Step 3: Cross multiply
    78,936.91x = 108,934.50 × 43,129.14
  4. Step 4: Simplify right side
    78,936.91x = 4,698,251,301.33
  5. Step 5: Solve for x
    x = 4,698,251,301.33/78,936.91
  6. Step 6: Final answer
    x = 59,519.07

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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.