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Finding the Fourth Proportional to 60,081.75, 90,123.84 and 18,528.75

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Solution

The fourth proportional to 60,081.75, 90,123.84 and 18,528.75 is: 27,793.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,081.75 : 90,123.84 = 18,528.75 : x
  2. Step 2: Convert to fraction form
    60,081.75/90,123.84 = 18,528.75/x
  3. Step 3: Cross multiply
    60,081.75x = 90,123.84 × 18,528.75
  4. Step 4: Simplify right side
    60,081.75x = 1,669,882,100.40
  5. Step 5: Solve for x
    x = 1,669,882,100.40/60,081.75
  6. Step 6: Final answer
    x = 27,793.50

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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.