Home / 53,876.20-74,351.28-31,216

Finding the Fourth Proportional to 53,876.20, 74,351.28 and 31,216

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Solution

The fourth proportional to 53,876.20, 74,351.28 and 31,216 is: 43,079.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,876.20 : 74,351.28 = 31,216 : x
  2. Step 2: Convert to fraction form
    53,876.20/74,351.28 = 31,216/x
  3. Step 3: Cross multiply
    53,876.20x = 74,351.28 × 31,216
  4. Step 4: Simplify right side
    53,876.20x = 2,320,949,556.48
  5. Step 5: Solve for x
    x = 2,320,949,556.48/53,876.20
  6. Step 6: Final answer
    x = 43,079.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.