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Finding the Fourth Proportional to 39,874.79, 55,035.16 and 22,890.51

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Solution

The fourth proportional to 39,874.79, 55,035.16 and 22,890.51 is: 31,593.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,874.79 : 55,035.16 = 22,890.51 : x
  2. Step 2: Convert to fraction form
    39,874.79/55,035.16 = 22,890.51/x
  3. Step 3: Cross multiply
    39,874.79x = 55,035.16 × 22,890.51
  4. Step 4: Simplify right side
    39,874.79x = 1,259,782,823.11
  5. Step 5: Solve for x
    x = 1,259,782,823.11/39,874.79
  6. Step 6: Final answer
    x = 31,593.46

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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.