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Finding the Fourth Proportional to 72,519.26, 108,822.03 and 39,238.66

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Solution

The fourth proportional to 72,519.26, 108,822.03 and 39,238.66 is: 58,881.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,519.26 : 108,822.03 = 39,238.66 : x
  2. Step 2: Convert to fraction form
    72,519.26/108,822.03 = 39,238.66/x
  3. Step 3: Cross multiply
    72,519.26x = 108,822.03 × 39,238.66
  4. Step 4: Simplify right side
    72,519.26x = 4,270,029,895.38
  5. Step 5: Solve for x
    x = 4,270,029,895.38/72,519.26
  6. Step 6: Final answer
    x = 58,881.32

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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.