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Finding the Fourth Proportional to 80,452.51, 120,668.33 and 21,292.74

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Solution

The fourth proportional to 80,452.51, 120,668.33 and 21,292.74 is: 31,936.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,452.51 : 120,668.33 = 21,292.74 : x
  2. Step 2: Convert to fraction form
    80,452.51/120,668.33 = 21,292.74/x
  3. Step 3: Cross multiply
    80,452.51x = 120,668.33 × 21,292.74
  4. Step 4: Simplify right side
    80,452.51x = 2,569,359,430.16
  5. Step 5: Solve for x
    x = 2,569,359,430.16/80,452.51
  6. Step 6: Final answer
    x = 31,936.35

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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.