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Finding the Fourth Proportional to 79,776.96, 110,092.41 and 43,478.70

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Solution

The fourth proportional to 79,776.96, 110,092.41 and 43,478.70 is: 60,000.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,776.96 : 110,092.41 = 43,478.70 : x
  2. Step 2: Convert to fraction form
    79,776.96/110,092.41 = 43,478.70/x
  3. Step 3: Cross multiply
    79,776.96x = 110,092.41 × 43,478.70
  4. Step 4: Simplify right side
    79,776.96x = 4,786,674,866.67
  5. Step 5: Solve for x
    x = 4,786,674,866.67/79,776.96
  6. Step 6: Final answer
    x = 60,000.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.