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Finding the Fourth Proportional to 48,279, 72,419.40 and 14,998.80

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Solution

The fourth proportional to 48,279, 72,419.40 and 14,998.80 is: 22,498.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,279 : 72,419.40 = 14,998.80 : x
  2. Step 2: Convert to fraction form
    48,279/72,419.40 = 14,998.80/x
  3. Step 3: Cross multiply
    48,279x = 72,419.40 × 14,998.80
  4. Step 4: Simplify right side
    48,279x = 1,086,204,096.72
  5. Step 5: Solve for x
    x = 1,086,204,096.72/48,279
  6. Step 6: Final answer
    x = 22,498.48

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1.5x scale

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.