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Finding the Fourth Proportional to 50,874.93, 70,207.40 and 28,217.39

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Solution

The fourth proportional to 50,874.93, 70,207.40 and 28,217.39 is: 38,939.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,874.93 : 70,207.40 = 28,217.39 : x
  2. Step 2: Convert to fraction form
    50,874.93/70,207.40 = 28,217.39/x
  3. Step 3: Cross multiply
    50,874.93x = 70,207.40 × 28,217.39
  4. Step 4: Simplify right side
    50,874.93x = 1,981,069,266.04
  5. Step 5: Solve for x
    x = 1,981,069,266.04/50,874.93
  6. Step 6: Final answer
    x = 38,939.99

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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.