Home / 40,788.32-56,344.68-38,660.18

Finding the Fourth Proportional to 40,788.32, 56,344.68 and 38,660.18

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Solution

The fourth proportional to 40,788.32, 56,344.68 and 38,660.18 is: 53,404.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,788.32 : 56,344.68 = 38,660.18 : x
  2. Step 2: Convert to fraction form
    40,788.32/56,344.68 = 38,660.18/x
  3. Step 3: Cross multiply
    40,788.32x = 56,344.68 × 38,660.18
  4. Step 4: Simplify right side
    40,788.32x = 2,178,295,189.12
  5. Step 5: Solve for x
    x = 2,178,295,189.12/40,788.32
  6. Step 6: Final answer
    x = 53,404.88

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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.