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Finding the Fourth Proportional to 38,482.62, 57,672.90 and 19,761.90

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Solution

The fourth proportional to 38,482.62, 57,672.90 and 19,761.90 is: 29,616.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,482.62 : 57,672.90 = 19,761.90 : x
  2. Step 2: Convert to fraction form
    38,482.62/57,672.90 = 19,761.90/x
  3. Step 3: Cross multiply
    38,482.62x = 57,672.90 × 19,761.90
  4. Step 4: Simplify right side
    38,482.62x = 1,139,726,082.51
  5. Step 5: Solve for x
    x = 1,139,726,082.51/38,482.62
  6. Step 6: Final answer
    x = 29,616.64

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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.