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Finding the Fourth Proportional to 45,969.55, 68,946.11 and 12,235.75

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Solution

The fourth proportional to 45,969.55, 68,946.11 and 12,235.75 is: 18,351.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,969.55 : 68,946.11 = 12,235.75 : x
  2. Step 2: Convert to fraction form
    45,969.55/68,946.11 = 12,235.75/x
  3. Step 3: Cross multiply
    45,969.55x = 68,946.11 × 12,235.75
  4. Step 4: Simplify right side
    45,969.55x = 843,607,304.25
  5. Step 5: Solve for x
    x = 843,607,304.25/45,969.55
  6. Step 6: Final answer
    x = 18,351.44

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1.5x scale

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.