Home / 57,065.28-85,680.99-40,513.20

Finding the Fourth Proportional to 57,065.28, 85,680.99 and 40,513.20

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Solution

The fourth proportional to 57,065.28, 85,680.99 and 40,513.20 is: 60,828.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,065.28 : 85,680.99 = 40,513.20 : x
  2. Step 2: Convert to fraction form
    57,065.28/85,680.99 = 40,513.20/x
  3. Step 3: Cross multiply
    57,065.28x = 85,680.99 × 40,513.20
  4. Step 4: Simplify right side
    57,065.28x = 3,471,211,084.07
  5. Step 5: Solve for x
    x = 3,471,211,084.07/57,065.28
  6. Step 6: Final answer
    x = 60,828.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.