Home / 90,831.90-136,109.05-38,212.54

Finding the Fourth Proportional to 90,831.90, 136,109.05 and 38,212.54

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Solution

The fourth proportional to 90,831.90, 136,109.05 and 38,212.54 is: 57,260.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,831.90 : 136,109.05 = 38,212.54 : x
  2. Step 2: Convert to fraction form
    90,831.90/136,109.05 = 38,212.54/x
  3. Step 3: Cross multiply
    90,831.90x = 136,109.05 × 38,212.54
  4. Step 4: Simplify right side
    90,831.90x = 5,201,072,517.49
  5. Step 5: Solve for x
    x = 5,201,072,517.49/90,831.90
  6. Step 6: Final answer
    x = 57,260.42

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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.