Home / 66,402.26-99,603.19-20,813.44

Finding the Fourth Proportional to 66,402.26, 99,603.19 and 20,813.44

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Solution

The fourth proportional to 66,402.26, 99,603.19 and 20,813.44 is: 31,220.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,402.26 : 99,603.19 = 20,813.44 : x
  2. Step 2: Convert to fraction form
    66,402.26/99,603.19 = 20,813.44/x
  3. Step 3: Cross multiply
    66,402.26x = 99,603.19 × 20,813.44
  4. Step 4: Simplify right side
    66,402.26x = 2,073,084,795.88
  5. Step 5: Solve for x
    x = 2,073,084,795.88/66,402.26
  6. Step 6: Final answer
    x = 31,220.09

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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.