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Finding the Fourth Proportional to 84,464.78, 126,659.80 and 25,289.42

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Solution

The fourth proportional to 84,464.78, 126,659.80 and 25,289.42 is: 37,922.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,464.78 : 126,659.80 = 25,289.42 : x
  2. Step 2: Convert to fraction form
    84,464.78/126,659.80 = 25,289.42/x
  3. Step 3: Cross multiply
    84,464.78x = 126,659.80 × 25,289.42
  4. Step 4: Simplify right side
    84,464.78x = 3,203,152,277.63
  5. Step 5: Solve for x
    x = 3,203,152,277.63/84,464.78
  6. Step 6: Final answer
    x = 37,922.94

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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.