Home / 53,815.38-80,723.25-18,730.50

Finding the Fourth Proportional to 53,815.38, 80,723.25 and 18,730.50

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Solution

The fourth proportional to 53,815.38, 80,723.25 and 18,730.50 is: 28,095.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,815.38 : 80,723.25 = 18,730.50 : x
  2. Step 2: Convert to fraction form
    53,815.38/80,723.25 = 18,730.50/x
  3. Step 3: Cross multiply
    53,815.38x = 80,723.25 × 18,730.50
  4. Step 4: Simplify right side
    53,815.38x = 1,511,986,834.13
  5. Step 5: Solve for x
    x = 1,511,986,834.13/53,815.38
  6. Step 6: Final answer
    x = 28,095.81

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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.