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Finding the Fourth Proportional to 80,720, 111,394.62 and 44,425.62

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Solution

The fourth proportional to 80,720, 111,394.62 and 44,425.62 is: 61,307.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,720 : 111,394.62 = 44,425.62 : x
  2. Step 2: Convert to fraction form
    80,720/111,394.62 = 44,425.62/x
  3. Step 3: Cross multiply
    80,720x = 111,394.62 × 44,425.62
  4. Step 4: Simplify right side
    80,720x = 4,948,775,058.16
  5. Step 5: Solve for x
    x = 4,948,775,058.16/80,720
  6. Step 6: Final answer
    x = 61,307.92

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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.