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Finding the Fourth Proportional to 48,693.68, 73,069.10 and 20,612

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Solution

The fourth proportional to 48,693.68, 73,069.10 and 20,612 is: 30,930.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,693.68 : 73,069.10 = 20,612 : x
  2. Step 2: Convert to fraction form
    48,693.68/73,069.10 = 20,612/x
  3. Step 3: Cross multiply
    48,693.68x = 73,069.10 × 20,612
  4. Step 4: Simplify right side
    48,693.68x = 1,506,100,289.20
  5. Step 5: Solve for x
    x = 1,506,100,289.20/48,693.68
  6. Step 6: Final answer
    x = 30,930.10

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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.