Home / 55,680.72-76,840.92-31,811.28

Finding the Fourth Proportional to 55,680.72, 76,840.92 and 31,811.28

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Solution

The fourth proportional to 55,680.72, 76,840.92 and 31,811.28 is: 43,900.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,680.72 : 76,840.92 = 31,811.28 : x
  2. Step 2: Convert to fraction form
    55,680.72/76,840.92 = 31,811.28/x
  3. Step 3: Cross multiply
    55,680.72x = 76,840.92 × 31,811.28
  4. Step 4: Simplify right side
    55,680.72x = 2,444,408,021.58
  5. Step 5: Solve for x
    x = 2,444,408,021.58/55,680.72
  6. Step 6: Final answer
    x = 43,900.44

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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.