Home / 55,631.96-76,770.66-31,103

Finding the Fourth Proportional to 55,631.96, 76,770.66 and 31,103

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Solution

The fourth proportional to 55,631.96, 76,770.66 and 31,103 is: 42,921.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,631.96 : 76,770.66 = 31,103 : x
  2. Step 2: Convert to fraction form
    55,631.96/76,770.66 = 31,103/x
  3. Step 3: Cross multiply
    55,631.96x = 76,770.66 × 31,103
  4. Step 4: Simplify right side
    55,631.96x = 2,387,797,837.98
  5. Step 5: Solve for x
    x = 2,387,797,837.98/55,631.96
  6. Step 6: Final answer
    x = 42,921.33

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1.5x scale

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.