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Finding the Fourth Proportional to 39,959.54, 55,143.89 and 22,054.55

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Solution

The fourth proportional to 39,959.54, 55,143.89 and 22,054.55 is: 30,435.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,959.54 : 55,143.89 = 22,054.55 : x
  2. Step 2: Convert to fraction form
    39,959.54/55,143.89 = 22,054.55/x
  3. Step 3: Cross multiply
    39,959.54x = 55,143.89 × 22,054.55
  4. Step 4: Simplify right side
    39,959.54x = 1,216,173,403.48
  5. Step 5: Solve for x
    x = 1,216,173,403.48/39,959.54
  6. Step 6: Final answer
    x = 30,435.12

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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.