Home / 80,933.10-121,290.30-54,203.10

Finding the Fourth Proportional to 80,933.10, 121,290.30 and 54,203.10

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Solution

The fourth proportional to 80,933.10, 121,290.30 and 54,203.10 is: 81,231.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,933.10 : 121,290.30 = 54,203.10 : x
  2. Step 2: Convert to fraction form
    80,933.10/121,290.30 = 54,203.10/x
  3. Step 3: Cross multiply
    80,933.10x = 121,290.30 × 54,203.10
  4. Step 4: Simplify right side
    80,933.10x = 6,574,310,259.93
  5. Step 5: Solve for x
    x = 6,574,310,259.93/80,933.10
  6. Step 6: Final answer
    x = 81,231.42

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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.