Home / 53,689.40-80,565.76-20,437.44

Finding the Fourth Proportional to 53,689.40, 80,565.76 and 20,437.44

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Solution

The fourth proportional to 53,689.40, 80,565.76 and 20,437.44 is: 30,668.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,689.40 : 80,565.76 = 20,437.44 : x
  2. Step 2: Convert to fraction form
    53,689.40/80,565.76 = 20,437.44/x
  3. Step 3: Cross multiply
    53,689.40x = 80,565.76 × 20,437.44
  4. Step 4: Simplify right side
    53,689.40x = 1,646,557,886.05
  5. Step 5: Solve for x
    x = 1,646,557,886.05/53,689.40
  6. Step 6: Final answer
    x = 30,668.21

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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.