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Finding the Fourth Proportional to 48,697.26, 72,990.53 and 20,599.78

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Solution

The fourth proportional to 48,697.26, 72,990.53 and 20,599.78 is: 30,876.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,697.26 : 72,990.53 = 20,599.78 : x
  2. Step 2: Convert to fraction form
    48,697.26/72,990.53 = 20,599.78/x
  3. Step 3: Cross multiply
    48,697.26x = 72,990.53 × 20,599.78
  4. Step 4: Simplify right side
    48,697.26x = 1,503,588,757.08
  5. Step 5: Solve for x
    x = 1,503,588,757.08/48,697.26
  6. Step 6: Final answer
    x = 30,876.25

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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.