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Finding the Fourth Proportional to 73,136.85, 100,928.98 and 40,871.46

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Solution

The fourth proportional to 73,136.85, 100,928.98 and 40,871.46 is: 56,402.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,136.85 : 100,928.98 = 40,871.46 : x
  2. Step 2: Convert to fraction form
    73,136.85/100,928.98 = 40,871.46/x
  3. Step 3: Cross multiply
    73,136.85x = 100,928.98 × 40,871.46
  4. Step 4: Simplify right side
    73,136.85x = 4,125,115,198.48
  5. Step 5: Solve for x
    x = 4,125,115,198.48/73,136.85
  6. Step 6: Final answer
    x = 56,402.69

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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.