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Finding the Fourth Proportional to 67,879.20, 101,883.60 and 34,636.80

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Solution

The fourth proportional to 67,879.20, 101,883.60 and 34,636.80 is: 51,988.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,879.20 : 101,883.60 = 34,636.80 : x
  2. Step 2: Convert to fraction form
    67,879.20/101,883.60 = 34,636.80/x
  3. Step 3: Cross multiply
    67,879.20x = 101,883.60 × 34,636.80
  4. Step 4: Simplify right side
    67,879.20x = 3,528,921,876.48
  5. Step 5: Solve for x
    x = 3,528,921,876.48/67,879.20
  6. Step 6: Final answer
    x = 51,988.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.