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Finding the Fourth Proportional to 69,438.74, 95,831.36 and 39,229.61

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Solution

The fourth proportional to 69,438.74, 95,831.36 and 39,229.61 is: 54,140.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,438.74 : 95,831.36 = 39,229.61 : x
  2. Step 2: Convert to fraction form
    69,438.74/95,831.36 = 39,229.61/x
  3. Step 3: Cross multiply
    69,438.74x = 95,831.36 × 39,229.61
  4. Step 4: Simplify right side
    69,438.74x = 3,759,426,203.26
  5. Step 5: Solve for x
    x = 3,759,426,203.26/69,438.74
  6. Step 6: Final answer
    x = 54,140.19

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1.5x scale

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.