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Finding the Fourth Proportional to 66,170.69, 99,174.01 and 31,036.53

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Solution

The fourth proportional to 66,170.69, 99,174.01 and 31,036.53 is: 46,516.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,170.69 : 99,174.01 = 31,036.53 : x
  2. Step 2: Convert to fraction form
    66,170.69/99,174.01 = 31,036.53/x
  3. Step 3: Cross multiply
    66,170.69x = 99,174.01 × 31,036.53
  4. Step 4: Simplify right side
    66,170.69x = 3,078,017,136.59
  5. Step 5: Solve for x
    x = 3,078,017,136.59/66,170.69
  6. Step 6: Final answer
    x = 46,516.32

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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.