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Finding the Fourth Proportional to 71,573.92, 107,366.16 and 18,982.24

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Solution

The fourth proportional to 71,573.92, 107,366.16 and 18,982.24 is: 28,474.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,573.92 : 107,366.16 = 18,982.24 : x
  2. Step 2: Convert to fraction form
    71,573.92/107,366.16 = 18,982.24/x
  3. Step 3: Cross multiply
    71,573.92x = 107,366.16 × 18,982.24
  4. Step 4: Simplify right side
    71,573.92x = 2,038,050,217.00
  5. Step 5: Solve for x
    x = 2,038,050,217.00/71,573.92
  6. Step 6: Final answer
    x = 28,474.76

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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.