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Finding the Fourth Proportional to 79,783,876.80, 119,377,216.80 and 52,910,020.80

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Solution

The fourth proportional to 79,783,876.80, 119,377,216.80 and 52,910,020.80 is: 79,167,010.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,783,876.80 : 119,377,216.80 = 52,910,020.80 : x
  2. Step 2: Convert to fraction form
    79,783,876.80/119,377,216.80 = 52,910,020.80/x
  3. Step 3: Cross multiply
    79,783,876.80x = 119,377,216.80 × 52,910,020.80
  4. Step 4: Simplify right side
    79,783,876.80x = 6,316,251,023,934,109
  5. Step 5: Solve for x
    x = 6,316,251,023,934,109/79,783,876.80
  6. Step 6: Final answer
    x = 79,167,010.65

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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.