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Finding the Fourth Proportional to 79,702.77, 109,989.83 and 43,892.47

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Solution

The fourth proportional to 79,702.77, 109,989.83 and 43,892.47 is: 60,571.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,702.77 : 109,989.83 = 43,892.47 : x
  2. Step 2: Convert to fraction form
    79,702.77/109,989.83 = 43,892.47/x
  3. Step 3: Cross multiply
    79,702.77x = 109,989.83 × 43,892.47
  4. Step 4: Simplify right side
    79,702.77x = 4,827,725,313.58
  5. Step 5: Solve for x
    x = 4,827,725,313.58/79,702.77
  6. Step 6: Final answer
    x = 60,571.61

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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.