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Finding the Fourth Proportional to 80,739, 121,073.16 and 40,733.37

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Solution

The fourth proportional to 80,739, 121,073.16 and 40,733.37 is: 61,082.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,739 : 121,073.16 = 40,733.37 : x
  2. Step 2: Convert to fraction form
    80,739/121,073.16 = 40,733.37/x
  3. Step 3: Cross multiply
    80,739x = 121,073.16 × 40,733.37
  4. Step 4: Simplify right side
    80,739x = 4,931,717,823.35
  5. Step 5: Solve for x
    x = 4,931,717,823.35/80,739
  6. Step 6: Final answer
    x = 61,082.23

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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.