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Finding the Fourth Proportional to 84,638.13, 126,964.88 and 22,308.63

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Solution

The fourth proportional to 84,638.13, 126,964.88 and 22,308.63 is: 33,464.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,638.13 : 126,964.88 = 22,308.63 : x
  2. Step 2: Convert to fraction form
    84,638.13/126,964.88 = 22,308.63/x
  3. Step 3: Cross multiply
    84,638.13x = 126,964.88 × 22,308.63
  4. Step 4: Simplify right side
    84,638.13x = 2,832,412,530.91
  5. Step 5: Solve for x
    x = 2,832,412,530.91/84,638.13
  6. Step 6: Final answer
    x = 33,464.97

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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.