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Finding the Fourth Proportional to 67,321.60, 100,871.28 and 40,946.56

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Solution

The fourth proportional to 67,321.60, 100,871.28 and 40,946.56 is: 61,352.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,321.60 : 100,871.28 = 40,946.56 : x
  2. Step 2: Convert to fraction form
    67,321.60/100,871.28 = 40,946.56/x
  3. Step 3: Cross multiply
    67,321.60x = 100,871.28 × 40,946.56
  4. Step 4: Simplify right side
    67,321.60x = 4,130,331,918.80
  5. Step 5: Solve for x
    x = 4,130,331,918.80/67,321.60
  6. Step 6: Final answer
    x = 61,352.25

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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.