Home / 66,128.28-99,193.23-19,382.10

Finding the Fourth Proportional to 66,128.28, 99,193.23 and 19,382.10

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Solution

The fourth proportional to 66,128.28, 99,193.23 and 19,382.10 is: 29,073.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,128.28 : 99,193.23 = 19,382.10 : x
  2. Step 2: Convert to fraction form
    66,128.28/99,193.23 = 19,382.10/x
  3. Step 3: Cross multiply
    66,128.28x = 99,193.23 × 19,382.10
  4. Step 4: Simplify right side
    66,128.28x = 1,922,573,103.18
  5. Step 5: Solve for x
    x = 1,922,573,103.18/66,128.28
  6. Step 6: Final answer
    x = 29,073.39

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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.