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Finding the Fourth Proportional to 32,228.89, 48,353.59 and 20,455.99

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Solution

The fourth proportional to 32,228.89, 48,353.59 and 20,455.99 is: 30,690.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,228.89 : 48,353.59 = 20,455.99 : x
  2. Step 2: Convert to fraction form
    32,228.89/48,353.59 = 20,455.99/x
  3. Step 3: Cross multiply
    32,228.89x = 48,353.59 × 20,455.99
  4. Step 4: Simplify right side
    32,228.89x = 989,120,615.11
  5. Step 5: Solve for x
    x = 989,120,615.11/32,228.89
  6. Step 6: Final answer
    x = 30,690.50

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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.