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Finding the Fourth Proportional to 52,122.32, 71,928.78 and 28,249

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Solution

The fourth proportional to 52,122.32, 71,928.78 and 28,249 is: 38,983.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,122.32 : 71,928.78 = 28,249 : x
  2. Step 2: Convert to fraction form
    52,122.32/71,928.78 = 28,249/x
  3. Step 3: Cross multiply
    52,122.32x = 71,928.78 × 28,249
  4. Step 4: Simplify right side
    52,122.32x = 2,031,916,106.22
  5. Step 5: Solve for x
    x = 2,031,916,106.22/52,122.32
  6. Step 6: Final answer
    x = 38,983.61

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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.