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Finding the Fourth Proportional to 80,583.90, 120,757.05 and 58,443.90

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Solution

The fourth proportional to 80,583.90, 120,757.05 and 58,443.90 is: 87,579.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,583.90 : 120,757.05 = 58,443.90 : x
  2. Step 2: Convert to fraction form
    80,583.90/120,757.05 = 58,443.90/x
  3. Step 3: Cross multiply
    80,583.90x = 120,757.05 × 58,443.90
  4. Step 4: Simplify right side
    80,583.90x = 7,057,512,954.50
  5. Step 5: Solve for x
    x = 7,057,512,954.50/80,583.90
  6. Step 6: Final answer
    x = 87,579.69

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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.