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Finding the Fourth Proportional to 79,621.92, 119,432.88 and 27,031.86

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Solution

The fourth proportional to 79,621.92, 119,432.88 and 27,031.86 is: 40,547.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,621.92 : 119,432.88 = 27,031.86 : x
  2. Step 2: Convert to fraction form
    79,621.92/119,432.88 = 27,031.86/x
  3. Step 3: Cross multiply
    79,621.92x = 119,432.88 × 27,031.86
  4. Step 4: Simplify right side
    79,621.92x = 3,228,492,891.56
  5. Step 5: Solve for x
    x = 3,228,492,891.56/79,621.92
  6. Step 6: Final answer
    x = 40,547.79

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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.