Home / 45,831.87-68,776.38-20,531.34

Finding the Fourth Proportional to 45,831.87, 68,776.38 and 20,531.34

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Solution

The fourth proportional to 45,831.87, 68,776.38 and 20,531.34 is: 30,809.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,831.87 : 68,776.38 = 20,531.34 : x
  2. Step 2: Convert to fraction form
    45,831.87/68,776.38 = 20,531.34/x
  3. Step 3: Cross multiply
    45,831.87x = 68,776.38 × 20,531.34
  4. Step 4: Simplify right side
    45,831.87x = 1,412,071,241.75
  5. Step 5: Solve for x
    x = 1,412,071,241.75/45,831.87
  6. Step 6: Final answer
    x = 30,809.81

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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.