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Finding the Fourth Proportional to 39,868, 55,017.88 and 23,110.72

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Solution

The fourth proportional to 39,868, 55,017.88 and 23,110.72 is: 31,892.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,868 : 55,017.88 = 23,110.72 : x
  2. Step 2: Convert to fraction form
    39,868/55,017.88 = 23,110.72/x
  3. Step 3: Cross multiply
    39,868x = 55,017.88 × 23,110.72
  4. Step 4: Simplify right side
    39,868x = 1,271,502,819.67
  5. Step 5: Solve for x
    x = 1,271,502,819.67/39,868
  6. Step 6: Final answer
    x = 31,892.82

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.