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Finding the Fourth Proportional to 84,674.90, 126,966.98 and 28,496.34

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Solution

The fourth proportional to 84,674.90, 126,966.98 and 28,496.34 is: 42,729.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,674.90 : 126,966.98 = 28,496.34 : x
  2. Step 2: Convert to fraction form
    84,674.90/126,966.98 = 28,496.34/x
  3. Step 3: Cross multiply
    84,674.90x = 126,966.98 × 28,496.34
  4. Step 4: Simplify right side
    84,674.90x = 3,618,094,230.85
  5. Step 5: Solve for x
    x = 3,618,094,230.85/84,674.90
  6. Step 6: Final answer
    x = 42,729.24

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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.