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Finding the Fourth Proportional to 79,151.40, 109,241.28 and 45,159.84

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Solution

The fourth proportional to 79,151.40, 109,241.28 and 45,159.84 is: 62,327.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,151.40 : 109,241.28 = 45,159.84 : x
  2. Step 2: Convert to fraction form
    79,151.40/109,241.28 = 45,159.84/x
  3. Step 3: Cross multiply
    79,151.40x = 109,241.28 × 45,159.84
  4. Step 4: Simplify right side
    79,151.40x = 4,933,318,726.20
  5. Step 5: Solve for x
    x = 4,933,318,726.20/79,151.40
  6. Step 6: Final answer
    x = 62,327.62

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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.