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Finding the Fourth Proportional to 69,732.39, 104,539.82 and 30,259.78

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Solution

The fourth proportional to 69,732.39, 104,539.82 and 30,259.78 is: 45,364.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,732.39 : 104,539.82 = 30,259.78 : x
  2. Step 2: Convert to fraction form
    69,732.39/104,539.82 = 30,259.78/x
  3. Step 3: Cross multiply
    69,732.39x = 104,539.82 × 30,259.78
  4. Step 4: Simplify right side
    69,732.39x = 3,163,351,541.79
  5. Step 5: Solve for x
    x = 3,163,351,541.79/69,732.39
  6. Step 6: Final answer
    x = 45,364.16

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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.