Home / 55,003.52-75,906.60-31,129.76

Finding the Fourth Proportional to 55,003.52, 75,906.60 and 31,129.76

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Solution

The fourth proportional to 55,003.52, 75,906.60 and 31,129.76 is: 42,960.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,003.52 : 75,906.60 = 31,129.76 : x
  2. Step 2: Convert to fraction form
    55,003.52/75,906.60 = 31,129.76/x
  3. Step 3: Cross multiply
    55,003.52x = 75,906.60 × 31,129.76
  4. Step 4: Simplify right side
    55,003.52x = 2,362,954,240.42
  5. Step 5: Solve for x
    x = 2,362,954,240.42/55,003.52
  6. Step 6: Final answer
    x = 42,960.05

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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.