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Finding the Fourth Proportional to 82,019.20, 123,022.40 and 32,089.60

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Solution

The fourth proportional to 82,019.20, 123,022.40 and 32,089.60 is: 48,131.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,019.20 : 123,022.40 = 32,089.60 : x
  2. Step 2: Convert to fraction form
    82,019.20/123,022.40 = 32,089.60/x
  3. Step 3: Cross multiply
    82,019.20x = 123,022.40 × 32,089.60
  4. Step 4: Simplify right side
    82,019.20x = 3,947,739,607.04
  5. Step 5: Solve for x
    x = 3,947,739,607.04/82,019.20
  6. Step 6: Final answer
    x = 48,131.90

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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.