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Finding the Fourth Proportional to 72,348.27, 108,521.38 and 43,892

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Solution

The fourth proportional to 72,348.27, 108,521.38 and 43,892 is: 65,837.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,348.27 : 108,521.38 = 43,892 : x
  2. Step 2: Convert to fraction form
    72,348.27/108,521.38 = 43,892/x
  3. Step 3: Cross multiply
    72,348.27x = 108,521.38 × 43,892
  4. Step 4: Simplify right side
    72,348.27x = 4,763,220,410.96
  5. Step 5: Solve for x
    x = 4,763,220,410.96/72,348.27
  6. Step 6: Final answer
    x = 65,837.38

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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.