Home / 55,921.80-77,171.49-30,428.94

Finding the Fourth Proportional to 55,921.80, 77,171.49 and 30,428.94

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Solution

The fourth proportional to 55,921.80, 77,171.49 and 30,428.94 is: 41,991.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,921.80 : 77,171.49 = 30,428.94 : x
  2. Step 2: Convert to fraction form
    55,921.80/77,171.49 = 30,428.94/x
  3. Step 3: Cross multiply
    55,921.80x = 77,171.49 × 30,428.94
  4. Step 4: Simplify right side
    55,921.80x = 2,348,246,638.92
  5. Step 5: Solve for x
    x = 2,348,246,638.92/55,921.80
  6. Step 6: Final answer
    x = 41,991.61

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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.