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Finding the Fourth Proportional to 66,355.40, 99,550.11 and 21,994.54

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Solution

The fourth proportional to 66,355.40, 99,550.11 and 21,994.54 is: 32,997.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,355.40 : 99,550.11 = 21,994.54 : x
  2. Step 2: Convert to fraction form
    66,355.40/99,550.11 = 21,994.54/x
  3. Step 3: Cross multiply
    66,355.40x = 99,550.11 × 21,994.54
  4. Step 4: Simplify right side
    66,355.40x = 2,189,558,710.00
  5. Step 5: Solve for x
    x = 2,189,558,710.00/66,355.40
  6. Step 6: Final answer
    x = 32,997.44

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1.5x scale

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.