Home / 57,102.25-78,803.21-31,262.61

Finding the Fourth Proportional to 57,102.25, 78,803.21 and 31,262.61

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Solution

The fourth proportional to 57,102.25, 78,803.21 and 31,262.61 is: 43,143.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,102.25 : 78,803.21 = 31,262.61 : x
  2. Step 2: Convert to fraction form
    57,102.25/78,803.21 = 31,262.61/x
  3. Step 3: Cross multiply
    57,102.25x = 78,803.21 × 31,262.61
  4. Step 4: Simplify right side
    57,102.25x = 2,463,593,951.38
  5. Step 5: Solve for x
    x = 2,463,593,951.38/57,102.25
  6. Step 6: Final answer
    x = 43,143.55

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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.