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Finding the Fourth Proportional to 69,287.05, 103,934.28 and 21,898.54

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Solution

The fourth proportional to 69,287.05, 103,934.28 and 21,898.54 is: 32,848.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,287.05 : 103,934.28 = 21,898.54 : x
  2. Step 2: Convert to fraction form
    69,287.05/103,934.28 = 21,898.54/x
  3. Step 3: Cross multiply
    69,287.05x = 103,934.28 × 21,898.54
  4. Step 4: Simplify right side
    69,287.05x = 2,276,008,728.12
  5. Step 5: Solve for x
    x = 2,276,008,728.12/69,287.05
  6. Step 6: Final answer
    x = 32,848.98

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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.