Home / 57,622.20-86,522.40-31,378.20

Finding the Fourth Proportional to 57,622.20, 86,522.40 and 31,378.20

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Solution

The fourth proportional to 57,622.20, 86,522.40 and 31,378.20 is: 47,115.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,622.20 : 86,522.40 = 31,378.20 : x
  2. Step 2: Convert to fraction form
    57,622.20/86,522.40 = 31,378.20/x
  3. Step 3: Cross multiply
    57,622.20x = 86,522.40 × 31,378.20
  4. Step 4: Simplify right side
    57,622.20x = 2,714,917,171.68
  5. Step 5: Solve for x
    x = 2,714,917,171.68/57,622.20
  6. Step 6: Final answer
    x = 47,115.82

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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.