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Finding the Fourth Proportional to 69,086.47, 103,629.70 and 45,707.44

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Solution

The fourth proportional to 69,086.47, 103,629.70 and 45,707.44 is: 68,561.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,086.47 : 103,629.70 = 45,707.44 : x
  2. Step 2: Convert to fraction form
    69,086.47/103,629.70 = 45,707.44/x
  3. Step 3: Cross multiply
    69,086.47x = 103,629.70 × 45,707.44
  4. Step 4: Simplify right side
    69,086.47x = 4,736,648,294.97
  5. Step 5: Solve for x
    x = 4,736,648,294.97/69,086.47
  6. Step 6: Final answer
    x = 68,561.16

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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.