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Finding the Fourth Proportional to 43,720.30, 65,629.05 and 27,099.10

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Solution

The fourth proportional to 43,720.30, 65,629.05 and 27,099.10 is: 40,678.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,720.30 : 65,629.05 = 27,099.10 : x
  2. Step 2: Convert to fraction form
    43,720.30/65,629.05 = 27,099.10/x
  3. Step 3: Cross multiply
    43,720.30x = 65,629.05 × 27,099.10
  4. Step 4: Simplify right side
    43,720.30x = 1,778,488,188.86
  5. Step 5: Solve for x
    x = 1,778,488,188.86/43,720.30
  6. Step 6: Final answer
    x = 40,678.77

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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.