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Finding the Fourth Proportional to 71,935.93, 99,269.30 and 39,671.91

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Solution

The fourth proportional to 71,935.93, 99,269.30 and 39,671.91 is: 54,745.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,935.93 : 99,269.30 = 39,671.91 : x
  2. Step 2: Convert to fraction form
    71,935.93/99,269.30 = 39,671.91/x
  3. Step 3: Cross multiply
    71,935.93x = 99,269.30 × 39,671.91
  4. Step 4: Simplify right side
    71,935.93x = 3,938,202,735.36
  5. Step 5: Solve for x
    x = 3,938,202,735.36/71,935.93
  6. Step 6: Final answer
    x = 54,745.98

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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.