Home / 80,821.16-111,424.47-56,589.53

Finding the Fourth Proportional to 80,821.16, 111,424.47 and 56,589.53

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Solution

The fourth proportional to 80,821.16, 111,424.47 and 56,589.53 is: 78,017.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,821.16 : 111,424.47 = 56,589.53 : x
  2. Step 2: Convert to fraction form
    80,821.16/111,424.47 = 56,589.53/x
  3. Step 3: Cross multiply
    80,821.16x = 111,424.47 × 56,589.53
  4. Step 4: Simplify right side
    80,821.16x = 6,305,458,387.80
  5. Step 5: Solve for x
    x = 6,305,458,387.80/80,821.16
  6. Step 6: Final answer
    x = 78,017.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.