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Finding the Fourth Proportional to 40,658.33, 60,981.35 and 11,078.51

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Solution

The fourth proportional to 40,658.33, 60,981.35 and 11,078.51 is: 16,616.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,658.33 : 60,981.35 = 11,078.51 : x
  2. Step 2: Convert to fraction form
    40,658.33/60,981.35 = 11,078.51/x
  3. Step 3: Cross multiply
    40,658.33x = 60,981.35 × 11,078.51
  4. Step 4: Simplify right side
    40,658.33x = 675,582,135.49
  5. Step 5: Solve for x
    x = 675,582,135.49/40,658.33
  6. Step 6: Final answer
    x = 16,616.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.