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Finding the Fourth Proportional to 52,660, 79,021.17 and 19,403.48

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Solution

The fourth proportional to 52,660, 79,021.17 and 19,403.48 is: 29,116.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,660 : 79,021.17 = 19,403.48 : x
  2. Step 2: Convert to fraction form
    52,660/79,021.17 = 19,403.48/x
  3. Step 3: Cross multiply
    52,660x = 79,021.17 × 19,403.48
  4. Step 4: Simplify right side
    52,660x = 1,533,285,691.67
  5. Step 5: Solve for x
    x = 1,533,285,691.67/52,660
  6. Step 6: Final answer
    x = 29,116.71

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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.