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Finding the Fourth Proportional to 43,399.80, 65,099.72 and 15,691.32

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Solution

The fourth proportional to 43,399.80, 65,099.72 and 15,691.32 is: 23,536.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,399.80 : 65,099.72 = 15,691.32 : x
  2. Step 2: Convert to fraction form
    43,399.80/65,099.72 = 15,691.32/x
  3. Step 3: Cross multiply
    43,399.80x = 65,099.72 × 15,691.32
  4. Step 4: Simplify right side
    43,399.80x = 1,021,500,538.43
  5. Step 5: Solve for x
    x = 1,021,500,538.43/43,399.80
  6. Step 6: Final answer
    x = 23,536.99

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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.