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Finding the Fourth Proportional to 69,752.55, 104,613.07 and 19,831.56

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Solution

The fourth proportional to 69,752.55, 104,613.07 and 19,831.56 is: 29,742.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,752.55 : 104,613.07 = 19,831.56 : x
  2. Step 2: Convert to fraction form
    69,752.55/104,613.07 = 19,831.56/x
  3. Step 3: Cross multiply
    69,752.55x = 104,613.07 × 19,831.56
  4. Step 4: Simplify right side
    69,752.55x = 2,074,640,374.49
  5. Step 5: Solve for x
    x = 2,074,640,374.49/69,752.55
  6. Step 6: Final answer
    x = 29,742.86

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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.