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Finding the Fourth Proportional to 69,442.56, 104,161.28 and 20,193.28

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Solution

The fourth proportional to 69,442.56, 104,161.28 and 20,193.28 is: 30,289.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,442.56 : 104,161.28 = 20,193.28 : x
  2. Step 2: Convert to fraction form
    69,442.56/104,161.28 = 20,193.28/x
  3. Step 3: Cross multiply
    69,442.56x = 104,161.28 × 20,193.28
  4. Step 4: Simplify right side
    69,442.56x = 2,103,357,892.20
  5. Step 5: Solve for x
    x = 2,103,357,892.20/69,442.56
  6. Step 6: Final answer
    x = 30,289.18

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1.5x scale

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.