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Finding the Fourth Proportional to 35,339.25, 48,765.12 and 20,801.90

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Solution

The fourth proportional to 35,339.25, 48,765.12 and 20,801.90 is: 28,704.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,339.25 : 48,765.12 = 20,801.90 : x
  2. Step 2: Convert to fraction form
    35,339.25/48,765.12 = 20,801.90/x
  3. Step 3: Cross multiply
    35,339.25x = 48,765.12 × 20,801.90
  4. Step 4: Simplify right side
    35,339.25x = 1,014,406,905.90
  5. Step 5: Solve for x
    x = 1,014,406,905.90/35,339.25
  6. Step 6: Final answer
    x = 28,704.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.