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Finding the Fourth Proportional to 84,422.25, 126,677.12 and 42,869.25

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Solution

The fourth proportional to 84,422.25, 126,677.12 and 42,869.25 is: 64,326.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,422.25 : 126,677.12 = 42,869.25 : x
  2. Step 2: Convert to fraction form
    84,422.25/126,677.12 = 42,869.25/x
  3. Step 3: Cross multiply
    84,422.25x = 126,677.12 × 42,869.25
  4. Step 4: Simplify right side
    84,422.25x = 5,430,552,912.21
  5. Step 5: Solve for x
    x = 5,430,552,912.21/84,422.25
  6. Step 6: Final answer
    x = 64,326.09

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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.