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Finding the Fourth Proportional to 72,674.58, 100,293.90 and 40,843.41

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Solution

The fourth proportional to 72,674.58, 100,293.90 and 40,843.41 is: 56,365.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,674.58 : 100,293.90 = 40,843.41 : x
  2. Step 2: Convert to fraction form
    72,674.58/100,293.90 = 40,843.41/x
  3. Step 3: Cross multiply
    72,674.58x = 100,293.90 × 40,843.41
  4. Step 4: Simplify right side
    72,674.58x = 4,096,344,878.20
  5. Step 5: Solve for x
    x = 4,096,344,878.20/72,674.58
  6. Step 6: Final answer
    x = 56,365.58

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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.