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Finding the Fourth Proportional to 66,991.84, 92,429.80 and 43,132.34

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Solution

The fourth proportional to 66,991.84, 92,429.80 and 43,132.34 is: 59,510.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,991.84 : 92,429.80 = 43,132.34 : x
  2. Step 2: Convert to fraction form
    66,991.84/92,429.80 = 43,132.34/x
  3. Step 3: Cross multiply
    66,991.84x = 92,429.80 × 43,132.34
  4. Step 4: Simplify right side
    66,991.84x = 3,986,713,559.73
  5. Step 5: Solve for x
    x = 3,986,713,559.73/66,991.84
  6. Step 6: Final answer
    x = 59,510.44

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.