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Finding the Fourth Proportional to 71,514.34, 107,288.84 and 21,591.45

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Solution

The fourth proportional to 71,514.34, 107,288.84 and 21,591.45 is: 32,392.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,514.34 : 107,288.84 = 21,591.45 : x
  2. Step 2: Convert to fraction form
    71,514.34/107,288.84 = 21,591.45/x
  3. Step 3: Cross multiply
    71,514.34x = 107,288.84 × 21,591.45
  4. Step 4: Simplify right side
    71,514.34x = 2,316,521,624.42
  5. Step 5: Solve for x
    x = 2,316,521,624.42/71,514.34
  6. Step 6: Final answer
    x = 32,392.41

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1.5x scale

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.