Home / 55,231.76-76,217.10-31,355.30

Finding the Fourth Proportional to 55,231.76, 76,217.10 and 31,355.30

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Solution

The fourth proportional to 55,231.76, 76,217.10 and 31,355.30 is: 43,268.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,231.76 : 76,217.10 = 31,355.30 : x
  2. Step 2: Convert to fraction form
    55,231.76/76,217.10 = 31,355.30/x
  3. Step 3: Cross multiply
    55,231.76x = 76,217.10 × 31,355.30
  4. Step 4: Simplify right side
    55,231.76x = 2,389,810,035.63
  5. Step 5: Solve for x
    x = 2,389,810,035.63/55,231.76
  6. Step 6: Final answer
    x = 43,268.76

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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.