Home / 57,242.27-78,921.74-40,908.99

Finding the Fourth Proportional to 57,242.27, 78,921.74 and 40,908.99

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Solution

The fourth proportional to 57,242.27, 78,921.74 and 40,908.99 is: 56,402.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,242.27 : 78,921.74 = 40,908.99 : x
  2. Step 2: Convert to fraction form
    57,242.27/78,921.74 = 40,908.99/x
  3. Step 3: Cross multiply
    57,242.27x = 78,921.74 × 40,908.99
  4. Step 4: Simplify right side
    57,242.27x = 3,228,608,467.90
  5. Step 5: Solve for x
    x = 3,228,608,467.90/57,242.27
  6. Step 6: Final answer
    x = 56,402.53

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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.