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Finding the Fourth Proportional to 32,540.40, 48,826.80 and 18,511.20

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Solution

The fourth proportional to 32,540.40, 48,826.80 and 18,511.20 is: 27,776.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,540.40 : 48,826.80 = 18,511.20 : x
  2. Step 2: Convert to fraction form
    32,540.40/48,826.80 = 18,511.20/x
  3. Step 3: Cross multiply
    32,540.40x = 48,826.80 × 18,511.20
  4. Step 4: Simplify right side
    32,540.40x = 903,842,660.16
  5. Step 5: Solve for x
    x = 903,842,660.16/32,540.40
  6. Step 6: Final answer
    x = 27,776.02

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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.