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Finding the Fourth Proportional to 69,684.57, 104,526.86 and 30,240.81

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Solution

The fourth proportional to 69,684.57, 104,526.86 and 30,240.81 is: 45,361.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,684.57 : 104,526.86 = 30,240.81 : x
  2. Step 2: Convert to fraction form
    69,684.57/104,526.86 = 30,240.81/x
  3. Step 3: Cross multiply
    69,684.57x = 104,526.86 × 30,240.81
  4. Step 4: Simplify right side
    69,684.57x = 3,160,976,913.16
  5. Step 5: Solve for x
    x = 3,160,976,913.16/69,684.57
  6. Step 6: Final answer
    x = 45,361.22

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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.