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Finding the Fourth Proportional to 79,699.50, 109,983.24 and 43,889.13

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Solution

The fourth proportional to 79,699.50, 109,983.24 and 43,889.13 is: 60,565.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,699.50 : 109,983.24 = 43,889.13 : x
  2. Step 2: Convert to fraction form
    79,699.50/109,983.24 = 43,889.13/x
  3. Step 3: Cross multiply
    79,699.50x = 109,983.24 × 43,889.13
  4. Step 4: Simplify right side
    79,699.50x = 4,827,068,718.18
  5. Step 5: Solve for x
    x = 4,827,068,718.18/79,699.50
  6. Step 6: Final answer
    x = 60,565.86

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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.