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Finding the Fourth Proportional to 84,175.80, 126,263.70 and 21,846.30

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Solution

The fourth proportional to 84,175.80, 126,263.70 and 21,846.30 is: 32,769.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,175.80 : 126,263.70 = 21,846.30 : x
  2. Step 2: Convert to fraction form
    84,175.80/126,263.70 = 21,846.30/x
  3. Step 3: Cross multiply
    84,175.80x = 126,263.70 × 21,846.30
  4. Step 4: Simplify right side
    84,175.80x = 2,758,394,669.31
  5. Step 5: Solve for x
    x = 2,758,394,669.31/84,175.80
  6. Step 6: Final answer
    x = 32,769.45

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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.