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Finding the Fourth Proportional to 79,549.55, 119,322.18 and 19,578.56

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Solution

The fourth proportional to 79,549.55, 119,322.18 and 19,578.56 is: 29,367.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,549.55 : 119,322.18 = 19,578.56 : x
  2. Step 2: Convert to fraction form
    79,549.55/119,322.18 = 19,578.56/x
  3. Step 3: Cross multiply
    79,549.55x = 119,322.18 × 19,578.56
  4. Step 4: Simplify right side
    79,549.55x = 2,336,155,863.85
  5. Step 5: Solve for x
    x = 2,336,155,863.85/79,549.55
  6. Step 6: Final answer
    x = 29,367.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.