Home / 55,221.72-76,206.34-31,348.80

Finding the Fourth Proportional to 55,221.72, 76,206.34 and 31,348.80

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Solution

The fourth proportional to 55,221.72, 76,206.34 and 31,348.80 is: 43,261.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,221.72 : 76,206.34 = 31,348.80 : x
  2. Step 2: Convert to fraction form
    55,221.72/76,206.34 = 31,348.80/x
  3. Step 3: Cross multiply
    55,221.72x = 76,206.34 × 31,348.80
  4. Step 4: Simplify right side
    55,221.72x = 2,388,977,311.39
  5. Step 5: Solve for x
    x = 2,388,977,311.39/55,221.72
  6. Step 6: Final answer
    x = 43,261.55

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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.