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Finding the Fourth Proportional to 79,781.94, 110,151.90 and 61,599.60

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Solution

The fourth proportional to 79,781.94, 110,151.90 and 61,599.60 is: 85,048.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,781.94 : 110,151.90 = 61,599.60 : x
  2. Step 2: Convert to fraction form
    79,781.94/110,151.90 = 61,599.60/x
  3. Step 3: Cross multiply
    79,781.94x = 110,151.90 × 61,599.60
  4. Step 4: Simplify right side
    79,781.94x = 6,785,312,979.24
  5. Step 5: Solve for x
    x = 6,785,312,979.24/79,781.94
  6. Step 6: Final answer
    x = 85,048.23

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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.