Home / 40,118.64-55,382.16-28,642.56

Finding the Fourth Proportional to 40,118.64, 55,382.16 and 28,642.56

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Solution

The fourth proportional to 40,118.64, 55,382.16 and 28,642.56 is: 39,539.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,118.64 : 55,382.16 = 28,642.56 : x
  2. Step 2: Convert to fraction form
    40,118.64/55,382.16 = 28,642.56/x
  3. Step 3: Cross multiply
    40,118.64x = 55,382.16 × 28,642.56
  4. Step 4: Simplify right side
    40,118.64x = 1,586,286,840.73
  5. Step 5: Solve for x
    x = 1,586,286,840.73/40,118.64
  6. Step 6: Final answer
    x = 39,539.90

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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.