Home / 78,936.92-108,935.76-43,129.16

Finding the Fourth Proportional to 78,936.92, 108,935.76 and 43,129.16

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Solution

The fourth proportional to 78,936.92, 108,935.76 and 43,129.16 is: 59,519.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,936.92 : 108,935.76 = 43,129.16 : x
  2. Step 2: Convert to fraction form
    78,936.92/108,935.76 = 43,129.16/x
  3. Step 3: Cross multiply
    78,936.92x = 108,935.76 × 43,129.16
  4. Step 4: Simplify right side
    78,936.92x = 4,698,307,822.76
  5. Step 5: Solve for x
    x = 4,698,307,822.76/78,936.92
  6. Step 6: Final answer
    x = 59,519.78

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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.