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Finding the Fourth Proportional to 69,693.64, 104,544.43 and 19,769.81

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Solution

The fourth proportional to 69,693.64, 104,544.43 and 19,769.81 is: 29,655.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,693.64 : 104,544.43 = 19,769.81 : x
  2. Step 2: Convert to fraction form
    69,693.64/104,544.43 = 19,769.81/x
  3. Step 3: Cross multiply
    69,693.64x = 104,544.43 × 19,769.81
  4. Step 4: Simplify right side
    69,693.64x = 2,066,822,945.51
  5. Step 5: Solve for x
    x = 2,066,822,945.51/69,693.64
  6. Step 6: Final answer
    x = 29,655.83

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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.