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Finding the Fourth Proportional to 39,993.78, 55,202.12 and 22,999.89

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Solution

The fourth proportional to 39,993.78, 55,202.12 and 22,999.89 is: 31,746.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,993.78 : 55,202.12 = 22,999.89 : x
  2. Step 2: Convert to fraction form
    39,993.78/55,202.12 = 22,999.89/x
  3. Step 3: Cross multiply
    39,993.78x = 55,202.12 × 22,999.89
  4. Step 4: Simplify right side
    39,993.78x = 1,269,642,572.77
  5. Step 5: Solve for x
    x = 1,269,642,572.77/39,993.78
  6. Step 6: Final answer
    x = 31,746.00

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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.