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Finding the Fourth Proportional to 79,169.96, 109,252.40 and 45,177.82

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Solution

The fourth proportional to 79,169.96, 109,252.40 and 45,177.82 is: 62,344.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,169.96 : 109,252.40 = 45,177.82 : x
  2. Step 2: Convert to fraction form
    79,169.96/109,252.40 = 45,177.82/x
  3. Step 3: Cross multiply
    79,169.96x = 109,252.40 × 45,177.82
  4. Step 4: Simplify right side
    79,169.96x = 4,935,785,261.77
  5. Step 5: Solve for x
    x = 4,935,785,261.77/79,169.96
  6. Step 6: Final answer
    x = 62,344.17

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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.