Home / 66,721.08-92,136.39-42,889.26

Finding the Fourth Proportional to 66,721.08, 92,136.39 and 42,889.26

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Solution

The fourth proportional to 66,721.08, 92,136.39 and 42,889.26 is: 59,226.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,721.08 : 92,136.39 = 42,889.26 : x
  2. Step 2: Convert to fraction form
    66,721.08/92,136.39 = 42,889.26/x
  3. Step 3: Cross multiply
    66,721.08x = 92,136.39 × 42,889.26
  4. Step 4: Simplify right side
    66,721.08x = 3,951,661,586.17
  5. Step 5: Solve for x
    x = 3,951,661,586.17/66,721.08
  6. Step 6: Final answer
    x = 59,226.58

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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.