Home / 53,818.20-80,716.08-20,530.80

Finding the Fourth Proportional to 53,818.20, 80,716.08 and 20,530.80

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Solution

The fourth proportional to 53,818.20, 80,716.08 and 20,530.80 is: 30,791.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,818.20 : 80,716.08 = 20,530.80 : x
  2. Step 2: Convert to fraction form
    53,818.20/80,716.08 = 20,530.80/x
  3. Step 3: Cross multiply
    53,818.20x = 80,716.08 × 20,530.80
  4. Step 4: Simplify right side
    53,818.20x = 1,657,165,695.26
  5. Step 5: Solve for x
    x = 1,657,165,695.26/53,818.20
  6. Step 6: Final answer
    x = 30,791.92

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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.