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Finding the Fourth Proportional to 79,695, 109,979 and 43,885.10

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Solution

The fourth proportional to 79,695, 109,979 and 43,885.10 is: 60,561.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,695 : 109,979 = 43,885.10 : x
  2. Step 2: Convert to fraction form
    79,695/109,979 = 43,885.10/x
  3. Step 3: Cross multiply
    79,695x = 109,979 × 43,885.10
  4. Step 4: Simplify right side
    79,695x = 4,826,439,412.90
  5. Step 5: Solve for x
    x = 4,826,439,412.90/79,695
  6. Step 6: Final answer
    x = 60,561.38

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1.5x scale

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.