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Finding the Fourth Proportional to 53,168, 79,898.49 and 28,226.73

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Solution

The fourth proportional to 53,168, 79,898.49 and 28,226.73 is: 42,417.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,168 : 79,898.49 = 28,226.73 : x
  2. Step 2: Convert to fraction form
    53,168/79,898.49 = 28,226.73/x
  3. Step 3: Cross multiply
    53,168x = 79,898.49 × 28,226.73
  4. Step 4: Simplify right side
    53,168x = 2,255,273,104.64
  5. Step 5: Solve for x
    x = 2,255,273,104.64/53,168
  6. Step 6: Final answer
    x = 42,417.87

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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.