Home / 55,853.55-83,730.51-20,769.21

Finding the Fourth Proportional to 55,853.55, 83,730.51 and 20,769.21

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Solution

The fourth proportional to 55,853.55, 83,730.51 and 20,769.21 is: 31,135.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,853.55 : 83,730.51 = 20,769.21 : x
  2. Step 2: Convert to fraction form
    55,853.55/83,730.51 = 20,769.21/x
  3. Step 3: Cross multiply
    55,853.55x = 83,730.51 × 20,769.21
  4. Step 4: Simplify right side
    55,853.55x = 1,739,016,545.60
  5. Step 5: Solve for x
    x = 1,739,016,545.60/55,853.55
  6. Step 6: Final answer
    x = 31,135.29

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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.