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Finding the Fourth Proportional to 69,355.32, 104,048.60 and 21,973.28

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Solution

The fourth proportional to 69,355.32, 104,048.60 and 21,973.28 is: 32,964.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,355.32 : 104,048.60 = 21,973.28 : x
  2. Step 2: Convert to fraction form
    69,355.32/104,048.60 = 21,973.28/x
  3. Step 3: Cross multiply
    69,355.32x = 104,048.60 × 21,973.28
  4. Step 4: Simplify right side
    69,355.32x = 2,286,289,021.41
  5. Step 5: Solve for x
    x = 2,286,289,021.41/69,355.32
  6. Step 6: Final answer
    x = 32,964.87

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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.