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Finding the Fourth Proportional to 72,002.87, 108,020.70 and 27,650.51

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Solution

The fourth proportional to 72,002.87, 108,020.70 and 27,650.51 is: 41,482.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,002.87 : 108,020.70 = 27,650.51 : x
  2. Step 2: Convert to fraction form
    72,002.87/108,020.70 = 27,650.51/x
  3. Step 3: Cross multiply
    72,002.87x = 108,020.70 × 27,650.51
  4. Step 4: Simplify right side
    72,002.87x = 2,986,826,905.45
  5. Step 5: Solve for x
    x = 2,986,826,905.45/72,002.87
  6. Step 6: Final answer
    x = 41,482.06

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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.