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Finding the Fourth Proportional to 81,994.84, 112,914.66 and 71,234.80

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Solution

The fourth proportional to 81,994.84, 112,914.66 and 71,234.80 is: 98,097.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,994.84 : 112,914.66 = 71,234.80 : x
  2. Step 2: Convert to fraction form
    81,994.84/112,914.66 = 71,234.80/x
  3. Step 3: Cross multiply
    81,994.84x = 112,914.66 × 71,234.80
  4. Step 4: Simplify right side
    81,994.84x = 8,043,453,222.17
  5. Step 5: Solve for x
    x = 8,043,453,222.17/81,994.84
  6. Step 6: Final answer
    x = 98,097.07

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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.