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Finding the Fourth Proportional to 52,163.82, 78,251.76 and 18,899.55

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Solution

The fourth proportional to 52,163.82, 78,251.76 and 18,899.55 is: 28,351.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,163.82 : 78,251.76 = 18,899.55 : x
  2. Step 2: Convert to fraction form
    52,163.82/78,251.76 = 18,899.55/x
  3. Step 3: Cross multiply
    52,163.82x = 78,251.76 × 18,899.55
  4. Step 4: Simplify right side
    52,163.82x = 1,478,923,050.71
  5. Step 5: Solve for x
    x = 1,478,923,050.71/52,163.82
  6. Step 6: Final answer
    x = 28,351.51

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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.