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Finding the Fourth Proportional to 79,520.86, 119,300.82 and 39,558.70

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Solution

The fourth proportional to 79,520.86, 119,300.82 and 39,558.70 is: 59,347.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,520.86 : 119,300.82 = 39,558.70 : x
  2. Step 2: Convert to fraction form
    79,520.86/119,300.82 = 39,558.70/x
  3. Step 3: Cross multiply
    79,520.86x = 119,300.82 × 39,558.70
  4. Step 4: Simplify right side
    79,520.86x = 4,719,385,348.13
  5. Step 5: Solve for x
    x = 4,719,385,348.13/79,520.86
  6. Step 6: Final answer
    x = 59,347.77

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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.