Home / 65,441.28-90,350.72-40,305.28

Finding the Fourth Proportional to 65,441.28, 90,350.72 and 40,305.28

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Solution

The fourth proportional to 65,441.28, 90,350.72 and 40,305.28 is: 55,647.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,441.28 : 90,350.72 = 40,305.28 : x
  2. Step 2: Convert to fraction form
    65,441.28/90,350.72 = 40,305.28/x
  3. Step 3: Cross multiply
    65,441.28x = 90,350.72 × 40,305.28
  4. Step 4: Simplify right side
    65,441.28x = 3,641,611,067.80
  5. Step 5: Solve for x
    x = 3,641,611,067.80/65,441.28
  6. Step 6: Final answer
    x = 55,647.00

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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.