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Finding the Fourth Proportional to 81,213.40, 112,069.84 and 44,912.68

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Solution

The fourth proportional to 81,213.40, 112,069.84 and 44,912.68 is: 61,976.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,213.40 : 112,069.84 = 44,912.68 : x
  2. Step 2: Convert to fraction form
    81,213.40/112,069.84 = 44,912.68/x
  3. Step 3: Cross multiply
    81,213.40x = 112,069.84 × 44,912.68
  4. Step 4: Simplify right side
    81,213.40x = 5,033,356,861.57
  5. Step 5: Solve for x
    x = 5,033,356,861.57/81,213.40
  6. Step 6: Final answer
    x = 61,976.93

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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.