Home / 55,145.85-76,114.79-31,286.49

Finding the Fourth Proportional to 55,145.85, 76,114.79 and 31,286.49

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Solution

The fourth proportional to 55,145.85, 76,114.79 and 31,286.49 is: 43,183.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,145.85 : 76,114.79 = 31,286.49 : x
  2. Step 2: Convert to fraction form
    55,145.85/76,114.79 = 31,286.49/x
  3. Step 3: Cross multiply
    55,145.85x = 76,114.79 × 31,286.49
  4. Step 4: Simplify right side
    55,145.85x = 2,381,364,616.19
  5. Step 5: Solve for x
    x = 2,381,364,616.19/55,145.85
  6. Step 6: Final answer
    x = 43,183.02

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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.