Home / 57,057.28-85,668.98-40,505.20

Finding the Fourth Proportional to 57,057.28, 85,668.98 and 40,505.20

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Solution

The fourth proportional to 57,057.28, 85,668.98 and 40,505.20 is: 60,816.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,057.28 : 85,668.98 = 40,505.20 : x
  2. Step 2: Convert to fraction form
    57,057.28/85,668.98 = 40,505.20/x
  3. Step 3: Cross multiply
    57,057.28x = 85,668.98 × 40,505.20
  4. Step 4: Simplify right side
    57,057.28x = 3,470,038,752.00
  5. Step 5: Solve for x
    x = 3,470,038,752.00/57,057.28
  6. Step 6: Final answer
    x = 60,816.76

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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.