Home / 39,850.79-54,994.10-21,945.74

Finding the Fourth Proportional to 39,850.79, 54,994.10 and 21,945.74

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Solution

The fourth proportional to 39,850.79, 54,994.10 and 21,945.74 is: 30,285.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,850.79 : 54,994.10 = 21,945.74 : x
  2. Step 2: Convert to fraction form
    39,850.79/54,994.10 = 21,945.74/x
  3. Step 3: Cross multiply
    39,850.79x = 54,994.10 × 21,945.74
  4. Step 4: Simplify right side
    39,850.79x = 1,206,885,835.43
  5. Step 5: Solve for x
    x = 1,206,885,835.43/39,850.79
  6. Step 6: Final answer
    x = 30,285.12

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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.