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Finding the Fourth Proportional to 78,695, 108,599.10 and 43,367

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Solution

The fourth proportional to 78,695, 108,599.10 and 43,367 is: 59,846.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,695 : 108,599.10 = 43,367 : x
  2. Step 2: Convert to fraction form
    78,695/108,599.10 = 43,367/x
  3. Step 3: Cross multiply
    78,695x = 108,599.10 × 43,367
  4. Step 4: Simplify right side
    78,695x = 4,709,617,169.70
  5. Step 5: Solve for x
    x = 4,709,617,169.70/78,695
  6. Step 6: Final answer
    x = 59,846.46

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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.