Home / 53,920.44-80,876.66-20,643.48

Finding the Fourth Proportional to 53,920.44, 80,876.66 and 20,643.48

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Solution

The fourth proportional to 53,920.44, 80,876.66 and 20,643.48 is: 30,963.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,920.44 : 80,876.66 = 20,643.48 : x
  2. Step 2: Convert to fraction form
    53,920.44/80,876.66 = 20,643.48/x
  3. Step 3: Cross multiply
    53,920.44x = 80,876.66 × 20,643.48
  4. Step 4: Simplify right side
    53,920.44x = 1,669,575,713.18
  5. Step 5: Solve for x
    x = 1,669,575,713.18/53,920.44
  6. Step 6: Final answer
    x = 30,963.69

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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.