Home / 72,605.28-100,195.44-40,774.31

Finding the Fourth Proportional to 72,605.28, 100,195.44 and 40,774.31

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Solution

The fourth proportional to 72,605.28, 100,195.44 and 40,774.31 is: 56,268.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,605.28 : 100,195.44 = 40,774.31 : x
  2. Step 2: Convert to fraction form
    72,605.28/100,195.44 = 40,774.31/x
  3. Step 3: Cross multiply
    72,605.28x = 100,195.44 × 40,774.31
  4. Step 4: Simplify right side
    72,605.28x = 4,085,399,226.30
  5. Step 5: Solve for x
    x = 4,085,399,226.30/72,605.28
  6. Step 6: Final answer
    x = 56,268.62

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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.