Home / 39,521.76-54,593.28-31,620.48

Finding the Fourth Proportional to 39,521.76, 54,593.28 and 31,620.48

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Solution

The fourth proportional to 39,521.76, 54,593.28 and 31,620.48 is: 43,678.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,521.76 : 54,593.28 = 31,620.48 : x
  2. Step 2: Convert to fraction form
    39,521.76/54,593.28 = 31,620.48/x
  3. Step 3: Cross multiply
    39,521.76x = 54,593.28 × 31,620.48
  4. Step 4: Simplify right side
    39,521.76x = 1,726,265,718.37
  5. Step 5: Solve for x
    x = 1,726,265,718.37/39,521.76
  6. Step 6: Final answer
    x = 43,678.87

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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.