Home / 55,635.30-76,778.10-31,764.20

Finding the Fourth Proportional to 55,635.30, 76,778.10 and 31,764.20

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Solution

The fourth proportional to 55,635.30, 76,778.10 and 31,764.20 is: 43,835.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,635.30 : 76,778.10 = 31,764.20 : x
  2. Step 2: Convert to fraction form
    55,635.30/76,778.10 = 31,764.20/x
  3. Step 3: Cross multiply
    55,635.30x = 76,778.10 × 31,764.20
  4. Step 4: Simplify right side
    55,635.30x = 2,438,794,540.13
  5. Step 5: Solve for x
    x = 2,438,794,540.13/55,635.30
  6. Step 6: Final answer
    x = 43,835.38

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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.