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Finding the Fourth Proportional to 48,102.80, 72,105.60 and 21,826.40

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Solution

The fourth proportional to 48,102.80, 72,105.60 and 21,826.40 is: 32,717.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,102.80 : 72,105.60 = 21,826.40 : x
  2. Step 2: Convert to fraction form
    48,102.80/72,105.60 = 21,826.40/x
  3. Step 3: Cross multiply
    48,102.80x = 72,105.60 × 21,826.40
  4. Step 4: Simplify right side
    48,102.80x = 1,573,805,667.84
  5. Step 5: Solve for x
    x = 1,573,805,667.84/48,102.80
  6. Step 6: Final answer
    x = 32,717.55

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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.