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Finding the Fourth Proportional to 39,081, 58,623.12 and 11,379

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Solution

The fourth proportional to 39,081, 58,623.12 and 11,379 is: 17,068.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,081 : 58,623.12 = 11,379 : x
  2. Step 2: Convert to fraction form
    39,081/58,623.12 = 11,379/x
  3. Step 3: Cross multiply
    39,081x = 58,623.12 × 11,379
  4. Step 4: Simplify right side
    39,081x = 667,072,482.48
  5. Step 5: Solve for x
    x = 667,072,482.48/39,081
  6. Step 6: Final answer
    x = 17,068.97

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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.