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Finding the Fourth Proportional to 69,139.71, 103,735.08 and 55,935.09

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Solution

The fourth proportional to 69,139.71, 103,735.08 and 55,935.09 is: 83,923.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,139.71 : 103,735.08 = 55,935.09 : x
  2. Step 2: Convert to fraction form
    69,139.71/103,735.08 = 55,935.09/x
  3. Step 3: Cross multiply
    69,139.71x = 103,735.08 × 55,935.09
  4. Step 4: Simplify right side
    69,139.71x = 5,802,431,035.96
  5. Step 5: Solve for x
    x = 5,802,431,035.96/69,139.71
  6. Step 6: Final answer
    x = 83,923.28

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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.