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Finding the Fourth Proportional to 84,920.70, 127,380.86 and 22,591.20

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Solution

The fourth proportional to 84,920.70, 127,380.86 and 22,591.20 is: 33,886.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,920.70 : 127,380.86 = 22,591.20 : x
  2. Step 2: Convert to fraction form
    84,920.70/127,380.86 = 22,591.20/x
  3. Step 3: Cross multiply
    84,920.70x = 127,380.86 × 22,591.20
  4. Step 4: Simplify right side
    84,920.70x = 2,877,686,484.43
  5. Step 5: Solve for x
    x = 2,877,686,484.43/84,920.70
  6. Step 6: Final answer
    x = 33,886.75

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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.