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Finding the Fourth Proportional to 79,179.55, 109,237.37 and 45,189.92

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Solution

The fourth proportional to 79,179.55, 109,237.37 and 45,189.92 is: 62,344.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,179.55 : 109,237.37 = 45,189.92 : x
  2. Step 2: Convert to fraction form
    79,179.55/109,237.37 = 45,189.92/x
  3. Step 3: Cross multiply
    79,179.55x = 109,237.37 × 45,189.92
  4. Step 4: Simplify right side
    79,179.55x = 4,936,428,058.45
  5. Step 5: Solve for x
    x = 4,936,428,058.45/79,179.55
  6. Step 6: Final answer
    x = 62,344.74

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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.