Home / 78,939.56-108,944.12-43,135.00

Finding the Fourth Proportional to 78,939.56, 108,944.12 and 43,135.00

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Solution

The fourth proportional to 78,939.56, 108,944.12 and 43,135.00 is: 59,530.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,939.56 : 108,944.12 = 43,135.00 : x
  2. Step 2: Convert to fraction form
    78,939.56/108,944.12 = 43,135.00/x
  3. Step 3: Cross multiply
    78,939.56x = 108,944.12 × 43,135.00
  4. Step 4: Simplify right side
    78,939.56x = 4,699,304,451.68
  5. Step 5: Solve for x
    x = 4,699,304,451.68/78,939.56
  6. Step 6: Final answer
    x = 59,530.41

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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.