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Finding the Fourth Proportional to 52,118.70, 71,923.79 and 28,245.37

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Solution

The fourth proportional to 52,118.70, 71,923.79 and 28,245.37 is: 38,978.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,118.70 : 71,923.79 = 28,245.37 : x
  2. Step 2: Convert to fraction form
    52,118.70/71,923.79 = 28,245.37/x
  3. Step 3: Cross multiply
    52,118.70x = 71,923.79 × 28,245.37
  4. Step 4: Simplify right side
    52,118.70x = 2,031,514,060.35
  5. Step 5: Solve for x
    x = 2,031,514,060.35/52,118.70
  6. Step 6: Final answer
    x = 38,978.61

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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.