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Finding the Fourth Proportional to 35,059.20, 48,375 and 20,913.36

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Solution

The fourth proportional to 35,059.20, 48,375 and 20,913.36 is: 28,856.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,059.20 : 48,375 = 20,913.36 : x
  2. Step 2: Convert to fraction form
    35,059.20/48,375 = 20,913.36/x
  3. Step 3: Cross multiply
    35,059.20x = 48,375 × 20,913.36
  4. Step 4: Simplify right side
    35,059.20x = 1,011,683,790
  5. Step 5: Solve for x
    x = 1,011,683,790/35,059.20
  6. Step 6: Final answer
    x = 28,856.44

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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.