Home / 86,640.81-119,565.32-50,831.43

Finding the Fourth Proportional to 86,640.81, 119,565.32 and 50,831.43

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Solution

The fourth proportional to 86,640.81, 119,565.32 and 50,831.43 is: 70,147.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,640.81 : 119,565.32 = 50,831.43 : x
  2. Step 2: Convert to fraction form
    86,640.81/119,565.32 = 50,831.43/x
  3. Step 3: Cross multiply
    86,640.81x = 119,565.32 × 50,831.43
  4. Step 4: Simplify right side
    86,640.81x = 6,077,675,939.85
  5. Step 5: Solve for x
    x = 6,077,675,939.85/86,640.81
  6. Step 6: Final answer
    x = 70,147.96

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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.