Home / 55,945.85-83,919.90-20,878.51

Finding the Fourth Proportional to 55,945.85, 83,919.90 and 20,878.51

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Solution

The fourth proportional to 55,945.85, 83,919.90 and 20,878.51 is: 31,318.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,945.85 : 83,919.90 = 20,878.51 : x
  2. Step 2: Convert to fraction form
    55,945.85/83,919.90 = 20,878.51/x
  3. Step 3: Cross multiply
    55,945.85x = 83,919.90 × 20,878.51
  4. Step 4: Simplify right side
    55,945.85x = 1,752,122,471.35
  5. Step 5: Solve for x
    x = 1,752,122,471.35/55,945.85
  6. Step 6: Final answer
    x = 31,318.18

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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.