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Finding the Fourth Proportional to 79,699.56, 109,983.24 and 45,713.76

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Solution

The fourth proportional to 79,699.56, 109,983.24 and 45,713.76 is: 63,083.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,699.56 : 109,983.24 = 45,713.76 : x
  2. Step 2: Convert to fraction form
    79,699.56/109,983.24 = 45,713.76/x
  3. Step 3: Cross multiply
    79,699.56x = 109,983.24 × 45,713.76
  4. Step 4: Simplify right side
    79,699.56x = 5,027,747,437.38
  5. Step 5: Solve for x
    x = 5,027,747,437.38/79,699.56
  6. Step 6: Final answer
    x = 63,083.75

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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.