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Finding the Fourth Proportional to 60,675.65, 90,993.66 and 20,138.27

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Solution

The fourth proportional to 60,675.65, 90,993.66 and 20,138.27 is: 30,200.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,675.65 : 90,993.66 = 20,138.27 : x
  2. Step 2: Convert to fraction form
    60,675.65/90,993.66 = 20,138.27/x
  3. Step 3: Cross multiply
    60,675.65x = 90,993.66 × 20,138.27
  4. Step 4: Simplify right side
    60,675.65x = 1,832,454,438.40
  5. Step 5: Solve for x
    x = 1,832,454,438.40/60,675.65
  6. Step 6: Final answer
    x = 30,200.82

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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.