Home / 80,805.33-121,208.03-21,639.49

Finding the Fourth Proportional to 80,805.33, 121,208.03 and 21,639.49

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Solution

The fourth proportional to 80,805.33, 121,208.03 and 21,639.49 is: 32,459.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,805.33 : 121,208.03 = 21,639.49 : x
  2. Step 2: Convert to fraction form
    80,805.33/121,208.03 = 21,639.49/x
  3. Step 3: Cross multiply
    80,805.33x = 121,208.03 × 21,639.49
  4. Step 4: Simplify right side
    80,805.33x = 2,622,879,623.04
  5. Step 5: Solve for x
    x = 2,622,879,623.04/80,805.33
  6. Step 6: Final answer
    x = 32,459.24

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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.