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Finding the Fourth Proportional to 43,400.52, 65,079.18 and 20,007

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Solution

The fourth proportional to 43,400.52, 65,079.18 and 20,007 is: 30,000.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,400.52 : 65,079.18 = 20,007 : x
  2. Step 2: Convert to fraction form
    43,400.52/65,079.18 = 20,007/x
  3. Step 3: Cross multiply
    43,400.52x = 65,079.18 × 20,007
  4. Step 4: Simplify right side
    43,400.52x = 1,302,039,154.26
  5. Step 5: Solve for x
    x = 1,302,039,154.26/43,400.52
  6. Step 6: Final answer
    x = 30,000.54

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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.