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Finding the Fourth Proportional to 69,708, 104,503.20 and 30,235.38

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Solution

The fourth proportional to 69,708, 104,503.20 and 30,235.38 is: 45,327.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,708 : 104,503.20 = 30,235.38 : x
  2. Step 2: Convert to fraction form
    69,708/104,503.20 = 30,235.38/x
  3. Step 3: Cross multiply
    69,708x = 104,503.20 × 30,235.38
  4. Step 4: Simplify right side
    69,708x = 3,159,693,963.22
  5. Step 5: Solve for x
    x = 3,159,693,963.22/69,708
  6. Step 6: Final answer
    x = 45,327.57

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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.