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Finding the Fourth Proportional to 69,728, 104,971.42 and 63,527.86

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Solution

The fourth proportional to 69,728, 104,971.42 and 63,527.86 is: 95,637.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,728 : 104,971.42 = 63,527.86 : x
  2. Step 2: Convert to fraction form
    69,728/104,971.42 = 63,527.86/x
  3. Step 3: Cross multiply
    69,728x = 104,971.42 × 63,527.86
  4. Step 4: Simplify right side
    69,728x = 6,668,609,148.90
  5. Step 5: Solve for x
    x = 6,668,609,148.90/69,728
  6. Step 6: Final answer
    x = 95,637.46

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.