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Finding the Fourth Proportional to 38,718.80, 57,991.80 and 29,884.40

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Solution

The fourth proportional to 38,718.80, 57,991.80 and 29,884.40 is: 44,759.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,718.80 : 57,991.80 = 29,884.40 : x
  2. Step 2: Convert to fraction form
    38,718.80/57,991.80 = 29,884.40/x
  3. Step 3: Cross multiply
    38,718.80x = 57,991.80 × 29,884.40
  4. Step 4: Simplify right side
    38,718.80x = 1,733,050,147.92
  5. Step 5: Solve for x
    x = 1,733,050,147.92/38,718.80
  6. Step 6: Final answer
    x = 44,759.91

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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.