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Finding the Fourth Proportional to 69,711.20, 104,426.40 and 48,579.20

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Solution

The fourth proportional to 69,711.20, 104,426.40 and 48,579.20 is: 72,770.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,711.20 : 104,426.40 = 48,579.20 : x
  2. Step 2: Convert to fraction form
    69,711.20/104,426.40 = 48,579.20/x
  3. Step 3: Cross multiply
    69,711.20x = 104,426.40 × 48,579.20
  4. Step 4: Simplify right side
    69,711.20x = 5,072,950,970.88
  5. Step 5: Solve for x
    x = 5,072,950,970.88/69,711.20
  6. Step 6: Final answer
    x = 72,770.96

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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.