Home / 66,402.36-99,622.97-21,422.85

Finding the Fourth Proportional to 66,402.36, 99,622.97 and 21,422.85

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Solution

The fourth proportional to 66,402.36, 99,622.97 and 21,422.85 is: 32,140.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,402.36 : 99,622.97 = 21,422.85 : x
  2. Step 2: Convert to fraction form
    66,402.36/99,622.97 = 21,422.85/x
  3. Step 3: Cross multiply
    66,402.36x = 99,622.97 × 21,422.85
  4. Step 4: Simplify right side
    66,402.36x = 2,134,207,996.42
  5. Step 5: Solve for x
    x = 2,134,207,996.42/66,402.36
  6. Step 6: Final answer
    x = 32,140.54

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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.