Home / 55,631.64-76,778.10-31,761.75

Finding the Fourth Proportional to 55,631.64, 76,778.10 and 31,761.75

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Solution

The fourth proportional to 55,631.64, 76,778.10 and 31,761.75 is: 43,834.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,631.64 : 76,778.10 = 31,761.75 : x
  2. Step 2: Convert to fraction form
    55,631.64/76,778.10 = 31,761.75/x
  3. Step 3: Cross multiply
    55,631.64x = 76,778.10 × 31,761.75
  4. Step 4: Simplify right side
    55,631.64x = 2,438,606,817.68
  5. Step 5: Solve for x
    x = 2,438,606,817.68/55,631.64
  6. Step 6: Final answer
    x = 43,834.89

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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.