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Finding the Fourth Proportional to 71,992.98, 108,010.20 and 22,080.40

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Solution

The fourth proportional to 71,992.98, 108,010.20 and 22,080.40 is: 33,126.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,992.98 : 108,010.20 = 22,080.40 : x
  2. Step 2: Convert to fraction form
    71,992.98/108,010.20 = 22,080.40/x
  3. Step 3: Cross multiply
    71,992.98x = 108,010.20 × 22,080.40
  4. Step 4: Simplify right side
    71,992.98x = 2,384,908,637.89
  5. Step 5: Solve for x
    x = 2,384,908,637.89/71,992.98
  6. Step 6: Final answer
    x = 33,126.96

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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.