Home / 65,786.82-90,772.47-38,933.19

Finding the Fourth Proportional to 65,786.82, 90,772.47 and 38,933.19

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Solution

The fourth proportional to 65,786.82, 90,772.47 and 38,933.19 is: 53,719.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,786.82 : 90,772.47 = 38,933.19 : x
  2. Step 2: Convert to fraction form
    65,786.82/90,772.47 = 38,933.19/x
  3. Step 3: Cross multiply
    65,786.82x = 90,772.47 × 38,933.19
  4. Step 4: Simplify right side
    65,786.82x = 3,534,061,821.28
  5. Step 5: Solve for x
    x = 3,534,061,821.28/65,786.82
  6. Step 6: Final answer
    x = 53,719.91

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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.