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Finding the Fourth Proportional to 79,284, 109,415.24 and 43,475.39

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Solution

The fourth proportional to 79,284, 109,415.24 and 43,475.39 is: 59,997.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,284 : 109,415.24 = 43,475.39 : x
  2. Step 2: Convert to fraction form
    79,284/109,415.24 = 43,475.39/x
  3. Step 3: Cross multiply
    79,284x = 109,415.24 × 43,475.39
  4. Step 4: Simplify right side
    79,284x = 4,756,869,466.49
  5. Step 5: Solve for x
    x = 4,756,869,466.49/79,284
  6. Step 6: Final answer
    x = 59,997.85

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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.