Home / 72,736.42-100,375.28-40,905.30

Finding the Fourth Proportional to 72,736.42, 100,375.28 and 40,905.30

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Solution

The fourth proportional to 72,736.42, 100,375.28 and 40,905.30 is: 56,448.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,736.42 : 100,375.28 = 40,905.30 : x
  2. Step 2: Convert to fraction form
    72,736.42/100,375.28 = 40,905.30/x
  3. Step 3: Cross multiply
    72,736.42x = 100,375.28 × 40,905.30
  4. Step 4: Simplify right side
    72,736.42x = 4,105,880,940.98
  5. Step 5: Solve for x
    x = 4,105,880,940.98/72,736.42
  6. Step 6: Final answer
    x = 56,448.76

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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.