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Finding the Fourth Proportional to 69,878.48, 104,816.45 and 17,287.97

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Solution

The fourth proportional to 69,878.48, 104,816.45 and 17,287.97 is: 25,931.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,878.48 : 104,816.45 = 17,287.97 : x
  2. Step 2: Convert to fraction form
    69,878.48/104,816.45 = 17,287.97/x
  3. Step 3: Cross multiply
    69,878.48x = 104,816.45 × 17,287.97
  4. Step 4: Simplify right side
    69,878.48x = 1,812,063,162.24
  5. Step 5: Solve for x
    x = 1,812,063,162.24/69,878.48
  6. Step 6: Final answer
    x = 25,931.64

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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.