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Finding the Fourth Proportional to 35,358.03, 48,791.21 and 20,819.93

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Solution

The fourth proportional to 35,358.03, 48,791.21 and 20,819.93 is: 28,729.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,358.03 : 48,791.21 = 20,819.93 : x
  2. Step 2: Convert to fraction form
    35,358.03/48,791.21 = 20,819.93/x
  3. Step 3: Cross multiply
    35,358.03x = 48,791.21 × 20,819.93
  4. Step 4: Simplify right side
    35,358.03x = 1,015,829,228.76
  5. Step 5: Solve for x
    x = 1,015,829,228.76/35,358.03
  6. Step 6: Final answer
    x = 28,729.80

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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.