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Finding the Fourth Proportional to 41,978.40, 62,977.92 and 12,396.08

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Solution

The fourth proportional to 41,978.40, 62,977.92 and 12,396.08 is: 18,597.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,978.40 : 62,977.92 = 12,396.08 : x
  2. Step 2: Convert to fraction form
    41,978.40/62,977.92 = 12,396.08/x
  3. Step 3: Cross multiply
    41,978.40x = 62,977.92 × 12,396.08
  4. Step 4: Simplify right side
    41,978.40x = 780,679,334.55
  5. Step 5: Solve for x
    x = 780,679,334.55/41,978.40
  6. Step 6: Final answer
    x = 18,597.17

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.