Home / 55,147.76-76,102.32-31,276.64

Finding the Fourth Proportional to 55,147.76, 76,102.32 and 31,276.64

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Solution

The fourth proportional to 55,147.76, 76,102.32 and 31,276.64 is: 43,160.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,147.76 : 76,102.32 = 31,276.64 : x
  2. Step 2: Convert to fraction form
    55,147.76/76,102.32 = 31,276.64/x
  3. Step 3: Cross multiply
    55,147.76x = 76,102.32 × 31,276.64
  4. Step 4: Simplify right side
    55,147.76x = 2,380,224,865.80
  5. Step 5: Solve for x
    x = 2,380,224,865.80/55,147.76
  6. Step 6: Final answer
    x = 43,160.86

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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.