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Finding the Fourth Proportional to 81,674.92, 112,707.15 and 54,813.70

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Solution

The fourth proportional to 81,674.92, 112,707.15 and 54,813.70 is: 75,640.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,674.92 : 112,707.15 = 54,813.70 : x
  2. Step 2: Convert to fraction form
    81,674.92/112,707.15 = 54,813.70/x
  3. Step 3: Cross multiply
    81,674.92x = 112,707.15 × 54,813.70
  4. Step 4: Simplify right side
    81,674.92x = 6,177,895,907.96
  5. Step 5: Solve for x
    x = 6,177,895,907.96/81,674.92
  6. Step 6: Final answer
    x = 75,640.06

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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.