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Finding the Fourth Proportional to 73,760.69, 110,638.17 and 21,170.18

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Solution

The fourth proportional to 73,760.69, 110,638.17 and 21,170.18 is: 31,754.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,760.69 : 110,638.17 = 21,170.18 : x
  2. Step 2: Convert to fraction form
    73,760.69/110,638.17 = 21,170.18/x
  3. Step 3: Cross multiply
    73,760.69x = 110,638.17 × 21,170.18
  4. Step 4: Simplify right side
    73,760.69x = 2,342,229,420.58
  5. Step 5: Solve for x
    x = 2,342,229,420.58/73,760.69
  6. Step 6: Final answer
    x = 31,754.44

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1.5x scale

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.