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Finding the Fourth Proportional to 48,579.66, 72,874.31 and 13,519.31

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Solution

The fourth proportional to 48,579.66, 72,874.31 and 13,519.31 is: 20,280.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,579.66 : 72,874.31 = 13,519.31 : x
  2. Step 2: Convert to fraction form
    48,579.66/72,874.31 = 13,519.31/x
  3. Step 3: Cross multiply
    48,579.66x = 72,874.31 × 13,519.31
  4. Step 4: Simplify right side
    48,579.66x = 985,209,955.96
  5. Step 5: Solve for x
    x = 985,209,955.96/48,579.66
  6. Step 6: Final answer
    x = 20,280.30

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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.