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Finding the Fourth Proportional to 80,547.20, 120,820.80 and 33,891.20

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Solution

The fourth proportional to 80,547.20, 120,820.80 and 33,891.20 is: 50,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,547.20 : 120,820.80 = 33,891.20 : x
  2. Step 2: Convert to fraction form
    80,547.20/120,820.80 = 33,891.20/x
  3. Step 3: Cross multiply
    80,547.20x = 120,820.80 × 33,891.20
  4. Step 4: Simplify right side
    80,547.20x = 4,094,761,896.96
  5. Step 5: Solve for x
    x = 4,094,761,896.96/80,547.20
  6. Step 6: Final answer
    x = 50,836.80

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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.