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Finding the Fourth Proportional to 79,809.84, 110,137.14 and 43,999.72

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Solution

The fourth proportional to 79,809.84, 110,137.14 and 43,999.72 is: 60,719.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,809.84 : 110,137.14 = 43,999.72 : x
  2. Step 2: Convert to fraction form
    79,809.84/110,137.14 = 43,999.72/x
  3. Step 3: Cross multiply
    79,809.84x = 110,137.14 × 43,999.72
  4. Step 4: Simplify right side
    79,809.84x = 4,846,003,321.60
  5. Step 5: Solve for x
    x = 4,846,003,321.60/79,809.84
  6. Step 6: Final answer
    x = 60,719.37

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1.5x scale

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.