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Finding the Fourth Proportional to 72,514.69, 100,071.05 and 40,249.91

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Solution

The fourth proportional to 72,514.69, 100,071.05 and 40,249.91 is: 55,545.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,514.69 : 100,071.05 = 40,249.91 : x
  2. Step 2: Convert to fraction form
    72,514.69/100,071.05 = 40,249.91/x
  3. Step 3: Cross multiply
    72,514.69x = 100,071.05 × 40,249.91
  4. Step 4: Simplify right side
    72,514.69x = 4,027,850,805.03
  5. Step 5: Solve for x
    x = 4,027,850,805.03/72,514.69
  6. Step 6: Final answer
    x = 55,545.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.