Home / 54,981.60-82,456.20-21,690.60

Finding the Fourth Proportional to 54,981.60, 82,456.20 and 21,690.60

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Solution

The fourth proportional to 54,981.60, 82,456.20 and 21,690.60 is: 32,529.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,981.60 : 82,456.20 = 21,690.60 : x
  2. Step 2: Convert to fraction form
    54,981.60/82,456.20 = 21,690.60/x
  3. Step 3: Cross multiply
    54,981.60x = 82,456.20 × 21,690.60
  4. Step 4: Simplify right side
    54,981.60x = 1,788,524,451.72
  5. Step 5: Solve for x
    x = 1,788,524,451.72/54,981.60
  6. Step 6: Final answer
    x = 32,529.51

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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.