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Finding the Fourth Proportional to 84,290.00, 126,453.48 and 31,699.49

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Solution

The fourth proportional to 84,290.00, 126,453.48 and 31,699.49 is: 47,556.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,290.00 : 126,453.48 = 31,699.49 : x
  2. Step 2: Convert to fraction form
    84,290.00/126,453.48 = 31,699.49/x
  3. Step 3: Cross multiply
    84,290.00x = 126,453.48 × 31,699.49
  4. Step 4: Simplify right side
    84,290.00x = 4,008,510,508.59
  5. Step 5: Solve for x
    x = 4,008,510,508.59/84,290.00
  6. Step 6: Final answer
    x = 47,556.18

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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.