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Finding the Fourth Proportional to 39,983, 55,181.40 and 23,216

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Solution

The fourth proportional to 39,983, 55,181.40 and 23,216 is: 32,040.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,983 : 55,181.40 = 23,216 : x
  2. Step 2: Convert to fraction form
    39,983/55,181.40 = 23,216/x
  3. Step 3: Cross multiply
    39,983x = 55,181.40 × 23,216
  4. Step 4: Simplify right side
    39,983x = 1,281,091,382.40
  5. Step 5: Solve for x
    x = 1,281,091,382.40/39,983
  6. Step 6: Final answer
    x = 32,040.90

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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.