Home / 73,145.13-100,940.64-40,880.28

Finding the Fourth Proportional to 73,145.13, 100,940.64 and 40,880.28

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Solution

The fourth proportional to 73,145.13, 100,940.64 and 40,880.28 is: 56,414.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,145.13 : 100,940.64 = 40,880.28 : x
  2. Step 2: Convert to fraction form
    73,145.13/100,940.64 = 40,880.28/x
  3. Step 3: Cross multiply
    73,145.13x = 100,940.64 × 40,880.28
  4. Step 4: Simplify right side
    73,145.13x = 4,126,481,626.58
  5. Step 5: Solve for x
    x = 4,126,481,626.58/73,145.13
  6. Step 6: Final answer
    x = 56,414.99

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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.