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Finding the Fourth Proportional to 53,370.72, 80,028.90 and 17,819.28

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Solution

The fourth proportional to 53,370.72, 80,028.90 and 17,819.28 is: 26,719.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,370.72 : 80,028.90 = 17,819.28 : x
  2. Step 2: Convert to fraction form
    53,370.72/80,028.90 = 17,819.28/x
  3. Step 3: Cross multiply
    53,370.72x = 80,028.90 × 17,819.28
  4. Step 4: Simplify right side
    53,370.72x = 1,426,057,377.19
  5. Step 5: Solve for x
    x = 1,426,057,377.19/53,370.72
  6. Step 6: Final answer
    x = 26,719.85

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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.