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Finding the Fourth Proportional to 30,079.59, 45,120.87 and 7,893.03

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Solution

The fourth proportional to 30,079.59, 45,120.87 and 7,893.03 is: 11,839.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,079.59 : 45,120.87 = 7,893.03 : x
  2. Step 2: Convert to fraction form
    30,079.59/45,120.87 = 7,893.03/x
  3. Step 3: Cross multiply
    30,079.59x = 45,120.87 × 7,893.03
  4. Step 4: Simplify right side
    30,079.59x = 356,140,380.54
  5. Step 5: Solve for x
    x = 356,140,380.54/30,079.59
  6. Step 6: Final answer
    x = 11,839.93

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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.