Home / 55,129.21-76,076.01-31,257.50

Finding the Fourth Proportional to 55,129.21, 76,076.01 and 31,257.50

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Solution

The fourth proportional to 55,129.21, 76,076.01 and 31,257.50 is: 43,134.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,129.21 : 76,076.01 = 31,257.50 : x
  2. Step 2: Convert to fraction form
    55,129.21/76,076.01 = 31,257.50/x
  3. Step 3: Cross multiply
    55,129.21x = 76,076.01 × 31,257.50
  4. Step 4: Simplify right side
    55,129.21x = 2,377,945,502.19
  5. Step 5: Solve for x
    x = 2,377,945,502.19/55,129.21
  6. Step 6: Final answer
    x = 43,134.04

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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.