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Finding the Fourth Proportional to 161,479, 242,257.65 and 50,671

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Solution

The fourth proportional to 161,479, 242,257.65 and 50,671 is: 76,018.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,479 : 242,257.65 = 50,671 : x
  2. Step 2: Convert to fraction form
    161,479/242,257.65 = 50,671/x
  3. Step 3: Cross multiply
    161,479x = 242,257.65 × 50,671
  4. Step 4: Simplify right side
    161,479x = 12,275,437,383.15
  5. Step 5: Solve for x
    x = 12,275,437,383.15/161,479
  6. Step 6: Final answer
    x = 76,018.79

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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.