Home / 72,634.38-100,245.78-40,805.43

Finding the Fourth Proportional to 72,634.38, 100,245.78 and 40,805.43

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Solution

The fourth proportional to 72,634.38, 100,245.78 and 40,805.43 is: 56,317.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,634.38 : 100,245.78 = 40,805.43 : x
  2. Step 2: Convert to fraction form
    72,634.38/100,245.78 = 40,805.43/x
  3. Step 3: Cross multiply
    72,634.38x = 100,245.78 × 40,805.43
  4. Step 4: Simplify right side
    72,634.38x = 4,090,572,158.59
  5. Step 5: Solve for x
    x = 4,090,572,158.59/72,634.38
  6. Step 6: Final answer
    x = 56,317.30

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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.