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Finding the Fourth Proportional to 70,028.25, 105,048.78 and 27,898.12

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Solution

The fourth proportional to 70,028.25, 105,048.78 and 27,898.12 is: 41,849.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,028.25 : 105,048.78 = 27,898.12 : x
  2. Step 2: Convert to fraction form
    70,028.25/105,048.78 = 27,898.12/x
  3. Step 3: Cross multiply
    70,028.25x = 105,048.78 × 27,898.12
  4. Step 4: Simplify right side
    70,028.25x = 2,930,663,470.29
  5. Step 5: Solve for x
    x = 2,930,663,470.29/70,028.25
  6. Step 6: Final answer
    x = 41,849.73

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1.5x scale

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.