Home / 55,251.10-76,245.06-31,378.78

Finding the Fourth Proportional to 55,251.10, 76,245.06 and 31,378.78

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Solution

The fourth proportional to 55,251.10, 76,245.06 and 31,378.78 is: 43,301.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,251.10 : 76,245.06 = 31,378.78 : x
  2. Step 2: Convert to fraction form
    55,251.10/76,245.06 = 31,378.78/x
  3. Step 3: Cross multiply
    55,251.10x = 76,245.06 × 31,378.78
  4. Step 4: Simplify right side
    55,251.10x = 2,392,476,963.83
  5. Step 5: Solve for x
    x = 2,392,476,963.83/55,251.10
  6. Step 6: Final answer
    x = 43,301.89

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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.