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Finding the Fourth Proportional to 79,967.48, 119,951.37 and 20,803.05

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Solution

The fourth proportional to 79,967.48, 119,951.37 and 20,803.05 is: 31,204.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,967.48 : 119,951.37 = 20,803.05 : x
  2. Step 2: Convert to fraction form
    79,967.48/119,951.37 = 20,803.05/x
  3. Step 3: Cross multiply
    79,967.48x = 119,951.37 × 20,803.05
  4. Step 4: Simplify right side
    79,967.48x = 2,495,354,347.68
  5. Step 5: Solve for x
    x = 2,495,354,347.68/79,967.48
  6. Step 6: Final answer
    x = 31,204.61

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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.