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Finding the Fourth Proportional to 84,630.44, 127,021.80 and 45,221.24

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Solution

The fourth proportional to 84,630.44, 127,021.80 and 45,221.24 is: 67,872.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,630.44 : 127,021.80 = 45,221.24 : x
  2. Step 2: Convert to fraction form
    84,630.44/127,021.80 = 45,221.24/x
  3. Step 3: Cross multiply
    84,630.44x = 127,021.80 × 45,221.24
  4. Step 4: Simplify right side
    84,630.44x = 5,744,083,303.03
  5. Step 5: Solve for x
    x = 5,744,083,303.03/84,630.44
  6. Step 6: Final answer
    x = 67,872.54

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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.