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Finding the Fourth Proportional to 115,790.40, 173,685.60 and 36,912.60

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Solution

The fourth proportional to 115,790.40, 173,685.60 and 36,912.60 is: 55,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,790.40 : 173,685.60 = 36,912.60 : x
  2. Step 2: Convert to fraction form
    115,790.40/173,685.60 = 36,912.60/x
  3. Step 3: Cross multiply
    115,790.40x = 173,685.60 × 36,912.60
  4. Step 4: Simplify right side
    115,790.40x = 6,411,187,078.56
  5. Step 5: Solve for x
    x = 6,411,187,078.56/115,790.40
  6. Step 6: Final answer
    x = 55,368.90

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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.