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Finding the Fourth Proportional to 66,361.54, 99,526.83 and 38,221.78

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Solution

The fourth proportional to 66,361.54, 99,526.83 and 38,221.78 is: 57,323.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,361.54 : 99,526.83 = 38,221.78 : x
  2. Step 2: Convert to fraction form
    66,361.54/99,526.83 = 38,221.78/x
  3. Step 3: Cross multiply
    66,361.54x = 99,526.83 × 38,221.78
  4. Step 4: Simplify right side
    66,361.54x = 3,804,092,600.36
  5. Step 5: Solve for x
    x = 3,804,092,600.36/66,361.54
  6. Step 6: Final answer
    x = 57,323.75

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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.