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Finding the Fourth Proportional to 39,900, 55,062 and 23,134.08

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Solution

The fourth proportional to 39,900, 55,062 and 23,134.08 is: 31,925.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,900 : 55,062 = 23,134.08 : x
  2. Step 2: Convert to fraction form
    39,900/55,062 = 23,134.08/x
  3. Step 3: Cross multiply
    39,900x = 55,062 × 23,134.08
  4. Step 4: Simplify right side
    39,900x = 1,273,808,712.96
  5. Step 5: Solve for x
    x = 1,273,808,712.96/39,900
  6. Step 6: Final answer
    x = 31,925.03

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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.