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Finding the Fourth Proportional to 69,387, 95,754.06 and 39,579

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Solution

The fourth proportional to 69,387, 95,754.06 and 39,579 is: 54,619.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,387 : 95,754.06 = 39,579 : x
  2. Step 2: Convert to fraction form
    69,387/95,754.06 = 39,579/x
  3. Step 3: Cross multiply
    69,387x = 95,754.06 × 39,579
  4. Step 4: Simplify right side
    69,387x = 3,789,849,940.74
  5. Step 5: Solve for x
    x = 3,789,849,940.74/69,387
  6. Step 6: Final answer
    x = 54,619.02

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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.