Home / 55,657.62-83,519.19-20,621.70

Finding the Fourth Proportional to 55,657.62, 83,519.19 and 20,621.70

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Solution

The fourth proportional to 55,657.62, 83,519.19 and 20,621.70 is: 30,944.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,657.62 : 83,519.19 = 20,621.70 : x
  2. Step 2: Convert to fraction form
    55,657.62/83,519.19 = 20,621.70/x
  3. Step 3: Cross multiply
    55,657.62x = 83,519.19 × 20,621.70
  4. Step 4: Simplify right side
    55,657.62x = 1,722,307,680.42
  5. Step 5: Solve for x
    x = 1,722,307,680.42/55,657.62
  6. Step 6: Final answer
    x = 30,944.69

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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.