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Finding the Fourth Proportional to 33,687.70, 50,531.55 and 20,565.70

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Solution

The fourth proportional to 33,687.70, 50,531.55 and 20,565.70 is: 30,848.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,687.70 : 50,531.55 = 20,565.70 : x
  2. Step 2: Convert to fraction form
    33,687.70/50,531.55 = 20,565.70/x
  3. Step 3: Cross multiply
    33,687.70x = 50,531.55 × 20,565.70
  4. Step 4: Simplify right side
    33,687.70x = 1,039,216,697.84
  5. Step 5: Solve for x
    x = 1,039,216,697.84/33,687.70
  6. Step 6: Final answer
    x = 30,848.55

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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.