Home / 66,731.81-100,077.11-19,350.39

Finding the Fourth Proportional to 66,731.81, 100,077.11 and 19,350.39

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Solution

The fourth proportional to 66,731.81, 100,077.11 and 19,350.39 is: 29,019.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,731.81 : 100,077.11 = 19,350.39 : x
  2. Step 2: Convert to fraction form
    66,731.81/100,077.11 = 19,350.39/x
  3. Step 3: Cross multiply
    66,731.81x = 100,077.11 × 19,350.39
  4. Step 4: Simplify right side
    66,731.81x = 1,936,531,532.24
  5. Step 5: Solve for x
    x = 1,936,531,532.24/66,731.81
  6. Step 6: Final answer
    x = 29,019.62

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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.