Home / 40,979.20-56,530.56-31,544.32

Finding the Fourth Proportional to 40,979.20, 56,530.56 and 31,544.32

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Solution

The fourth proportional to 40,979.20, 56,530.56 and 31,544.32 is: 43,515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,979.20 : 56,530.56 = 31,544.32 : x
  2. Step 2: Convert to fraction form
    40,979.20/56,530.56 = 31,544.32/x
  3. Step 3: Cross multiply
    40,979.20x = 56,530.56 × 31,544.32
  4. Step 4: Simplify right side
    40,979.20x = 1,783,218,074.42
  5. Step 5: Solve for x
    x = 1,783,218,074.42/40,979.20
  6. Step 6: Final answer
    x = 43,515.20

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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.