Home / 72,634.56-100,245.78-40,805.88

Finding the Fourth Proportional to 72,634.56, 100,245.78 and 40,805.88

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Solution

The fourth proportional to 72,634.56, 100,245.78 and 40,805.88 is: 56,317.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,634.56 : 100,245.78 = 40,805.88 : x
  2. Step 2: Convert to fraction form
    72,634.56/100,245.78 = 40,805.88/x
  3. Step 3: Cross multiply
    72,634.56x = 100,245.78 × 40,805.88
  4. Step 4: Simplify right side
    72,634.56x = 4,090,617,269.19
  5. Step 5: Solve for x
    x = 4,090,617,269.19/72,634.56
  6. Step 6: Final answer
    x = 56,317.78

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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.