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Finding the Fourth Proportional to 72,511.43, 100,084.16 and 49,550.54

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Solution

The fourth proportional to 72,511.43, 100,084.16 and 49,550.54 is: 68,392.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,511.43 : 100,084.16 = 49,550.54 : x
  2. Step 2: Convert to fraction form
    72,511.43/100,084.16 = 49,550.54/x
  3. Step 3: Cross multiply
    72,511.43x = 100,084.16 × 49,550.54
  4. Step 4: Simplify right side
    72,511.43x = 4,959,223,425.27
  5. Step 5: Solve for x
    x = 4,959,223,425.27/72,511.43
  6. Step 6: Final answer
    x = 68,392.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.