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Finding the Fourth Proportional to 84,633.08, 126,960.54 and 28,448.96

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Solution

The fourth proportional to 84,633.08, 126,960.54 and 28,448.96 is: 42,677.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,633.08 : 126,960.54 = 28,448.96 : x
  2. Step 2: Convert to fraction form
    84,633.08/126,960.54 = 28,448.96/x
  3. Step 3: Cross multiply
    84,633.08x = 126,960.54 × 28,448.96
  4. Step 4: Simplify right side
    84,633.08x = 3,611,895,324.04
  5. Step 5: Solve for x
    x = 3,611,895,324.04/84,633.08
  6. Step 6: Final answer
    x = 42,677.11

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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.