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Finding the Fourth Proportional to 84,641.80, 126,876.30 and 49,563.40

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Solution

The fourth proportional to 84,641.80, 126,876.30 and 49,563.40 is: 74,294.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,641.80 : 126,876.30 = 49,563.40 : x
  2. Step 2: Convert to fraction form
    84,641.80/126,876.30 = 49,563.40/x
  3. Step 3: Cross multiply
    84,641.80x = 126,876.30 × 49,563.40
  4. Step 4: Simplify right side
    84,641.80x = 6,288,420,807.42
  5. Step 5: Solve for x
    x = 6,288,420,807.42/84,641.80
  6. Step 6: Final answer
    x = 74,294.51

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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.