Home / 90,831.36-136,050.12-43,986

Finding the Fourth Proportional to 90,831.36, 136,050.12 and 43,986

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Solution

The fourth proportional to 90,831.36, 136,050.12 and 43,986 is: 65,883.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,831.36 : 136,050.12 = 43,986 : x
  2. Step 2: Convert to fraction form
    90,831.36/136,050.12 = 43,986/x
  3. Step 3: Cross multiply
    90,831.36x = 136,050.12 × 43,986
  4. Step 4: Simplify right side
    90,831.36x = 5,984,300,578.32
  5. Step 5: Solve for x
    x = 5,984,300,578.32/90,831.36
  6. Step 6: Final answer
    x = 65,883.64

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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.