Home / 51,319.68-70,828.20-30,105.78

Finding the Fourth Proportional to 51,319.68, 70,828.20 and 30,105.78

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Solution

The fourth proportional to 51,319.68, 70,828.20 and 30,105.78 is: 41,550.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,319.68 : 70,828.20 = 30,105.78 : x
  2. Step 2: Convert to fraction form
    51,319.68/70,828.20 = 30,105.78/x
  3. Step 3: Cross multiply
    51,319.68x = 70,828.20 × 30,105.78
  4. Step 4: Simplify right side
    51,319.68x = 2,132,338,207.00
  5. Step 5: Solve for x
    x = 2,132,338,207.00/51,319.68
  6. Step 6: Final answer
    x = 41,550.11

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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.