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Finding the Fourth Proportional to 79,694.64, 109,978.43 and 43,395.53

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Solution

The fourth proportional to 79,694.64, 109,978.43 and 43,395.53 is: 59,885.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,694.64 : 109,978.43 = 43,395.53 : x
  2. Step 2: Convert to fraction form
    79,694.64/109,978.43 = 43,395.53/x
  3. Step 3: Cross multiply
    79,694.64x = 109,978.43 × 43,395.53
  4. Step 4: Simplify right side
    79,694.64x = 4,772,571,857.70
  5. Step 5: Solve for x
    x = 4,772,571,857.70/79,694.64
  6. Step 6: Final answer
    x = 59,885.73

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