Home / 53,979.10-80,859.30-30,578.20

Finding the Fourth Proportional to 53,979.10, 80,859.30 and 30,578.20

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Solution

The fourth proportional to 53,979.10, 80,859.30 and 30,578.20 is: 45,805.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,979.10 : 80,859.30 = 30,578.20 : x
  2. Step 2: Convert to fraction form
    53,979.10/80,859.30 = 30,578.20/x
  3. Step 3: Cross multiply
    53,979.10x = 80,859.30 × 30,578.20
  4. Step 4: Simplify right side
    53,979.10x = 2,472,531,847.26
  5. Step 5: Solve for x
    x = 2,472,531,847.26/53,979.10
  6. Step 6: Final answer
    x = 45,805.36

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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.