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Finding the Fourth Proportional to 60,074.68, 90,138.38 and 28,507.57

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Solution

The fourth proportional to 60,074.68, 90,138.38 and 28,507.57 is: 42,773.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,074.68 : 90,138.38 = 28,507.57 : x
  2. Step 2: Convert to fraction form
    60,074.68/90,138.38 = 28,507.57/x
  3. Step 3: Cross multiply
    60,074.68x = 90,138.38 × 28,507.57
  4. Step 4: Simplify right side
    60,074.68x = 2,569,626,177.54
  5. Step 5: Solve for x
    x = 2,569,626,177.54/60,074.68
  6. Step 6: Final answer
    x = 42,773.86

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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.