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Finding the Fourth Proportional to 43,768.40, 65,616.60 and 18,827.60

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Solution

The fourth proportional to 43,768.40, 65,616.60 and 18,827.60 is: 28,225.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,768.40 : 65,616.60 = 18,827.60 : x
  2. Step 2: Convert to fraction form
    43,768.40/65,616.60 = 18,827.60/x
  3. Step 3: Cross multiply
    43,768.40x = 65,616.60 × 18,827.60
  4. Step 4: Simplify right side
    43,768.40x = 1,235,403,098.16
  5. Step 5: Solve for x
    x = 1,235,403,098.16/43,768.40
  6. Step 6: Final answer
    x = 28,225.91

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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.