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Finding the Fourth Proportional to 71,510.27, 107,270.53 and 18,919.13

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Solution

The fourth proportional to 71,510.27, 107,270.53 and 18,919.13 is: 28,380.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,510.27 : 107,270.53 = 18,919.13 : x
  2. Step 2: Convert to fraction form
    71,510.27/107,270.53 = 18,919.13/x
  3. Step 3: Cross multiply
    71,510.27x = 107,270.53 × 18,919.13
  4. Step 4: Simplify right side
    71,510.27x = 2,029,464,518.59
  5. Step 5: Solve for x
    x = 2,029,464,518.59/71,510.27
  6. Step 6: Final answer
    x = 28,380.04

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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.