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Finding the Fourth Proportional to 66,925.72, 100,377.81 and 19,529.69

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Solution

The fourth proportional to 66,925.72, 100,377.81 and 19,529.69 is: 29,291.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,925.72 : 100,377.81 = 19,529.69 : x
  2. Step 2: Convert to fraction form
    66,925.72/100,377.81 = 19,529.69/x
  3. Step 3: Cross multiply
    66,925.72x = 100,377.81 × 19,529.69
  4. Step 4: Simplify right side
    66,925.72x = 1,960,347,010.29
  5. Step 5: Solve for x
    x = 1,960,347,010.29/66,925.72
  6. Step 6: Final answer
    x = 29,291.38

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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.