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Finding the Fourth Proportional to 73,145.71, 100,940.18 and 40,880.85

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Solution

The fourth proportional to 73,145.71, 100,940.18 and 40,880.85 is: 56,415.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,145.71 : 100,940.18 = 40,880.85 : x
  2. Step 2: Convert to fraction form
    73,145.71/100,940.18 = 40,880.85/x
  3. Step 3: Cross multiply
    73,145.71x = 100,940.18 × 40,880.85
  4. Step 4: Simplify right side
    73,145.71x = 4,126,520,357.55
  5. Step 5: Solve for x
    x = 4,126,520,357.55/73,145.71
  6. Step 6: Final answer
    x = 56,415.07

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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.