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Finding the Fourth Proportional to 72,703.80, 108,921.30 and 41,446.20

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Solution

The fourth proportional to 72,703.80, 108,921.30 and 41,446.20 is: 62,092.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,703.80 : 108,921.30 = 41,446.20 : x
  2. Step 2: Convert to fraction form
    72,703.80/108,921.30 = 41,446.20/x
  3. Step 3: Cross multiply
    72,703.80x = 108,921.30 × 41,446.20
  4. Step 4: Simplify right side
    72,703.80x = 4,514,373,984.06
  5. Step 5: Solve for x
    x = 4,514,373,984.06/72,703.80
  6. Step 6: Final answer
    x = 62,092.68

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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.