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Finding the Fourth Proportional to 66,635, 99,952.52 and 17,387

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Solution

The fourth proportional to 66,635, 99,952.52 and 17,387 is: 26,080.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,635 : 99,952.52 = 17,387 : x
  2. Step 2: Convert to fraction form
    66,635/99,952.52 = 17,387/x
  3. Step 3: Cross multiply
    66,635x = 99,952.52 × 17,387
  4. Step 4: Simplify right side
    66,635x = 1,737,874,378.31
  5. Step 5: Solve for x
    x = 1,737,874,378.31/66,635
  6. Step 6: Final answer
    x = 26,080.50

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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.