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Finding the Fourth Proportional to 79,076.76, 109,127.30 and 43,269.90

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Solution

The fourth proportional to 79,076.76, 109,127.30 and 43,269.90 is: 59,713.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,076.76 : 109,127.30 = 43,269.90 : x
  2. Step 2: Convert to fraction form
    79,076.76/109,127.30 = 43,269.90/x
  3. Step 3: Cross multiply
    79,076.76x = 109,127.30 × 43,269.90
  4. Step 4: Simplify right side
    79,076.76x = 4,721,927,141.92
  5. Step 5: Solve for x
    x = 4,721,927,141.92/79,076.76
  6. Step 6: Final answer
    x = 59,713.21

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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.