Home / 57,121.18-78,828.20-31,282

Finding the Fourth Proportional to 57,121.18, 78,828.20 and 31,282

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Solution

The fourth proportional to 57,121.18, 78,828.20 and 31,282 is: 43,169.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,121.18 : 78,828.20 = 31,282 : x
  2. Step 2: Convert to fraction form
    57,121.18/78,828.20 = 31,282/x
  3. Step 3: Cross multiply
    57,121.18x = 78,828.20 × 31,282
  4. Step 4: Simplify right side
    57,121.18x = 2,465,903,752.40
  5. Step 5: Solve for x
    x = 2,465,903,752.40/57,121.18
  6. Step 6: Final answer
    x = 43,169.69

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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.