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Finding the Fourth Proportional to 79,021.73, 109,050.09 and 45,028.73

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Solution

The fourth proportional to 79,021.73, 109,050.09 and 45,028.73 is: 62,139.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,021.73 : 109,050.09 = 45,028.73 : x
  2. Step 2: Convert to fraction form
    79,021.73/109,050.09 = 45,028.73/x
  3. Step 3: Cross multiply
    79,021.73x = 109,050.09 × 45,028.73
  4. Step 4: Simplify right side
    79,021.73x = 4,910,387,059.09
  5. Step 5: Solve for x
    x = 4,910,387,059.09/79,021.73
  6. Step 6: Final answer
    x = 62,139.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.