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Finding the Fourth Proportional to 72,163.47, 108,204.71 and 49,700.55

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Solution

The fourth proportional to 72,163.47, 108,204.71 and 49,700.55 is: 74,522.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,163.47 : 108,204.71 = 49,700.55 : x
  2. Step 2: Convert to fraction form
    72,163.47/108,204.71 = 49,700.55/x
  3. Step 3: Cross multiply
    72,163.47x = 108,204.71 × 49,700.55
  4. Step 4: Simplify right side
    72,163.47x = 5,377,833,351.09
  5. Step 5: Solve for x
    x = 5,377,833,351.09/72,163.47
  6. Step 6: Final answer
    x = 74,522.93

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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.