Home / 66,105.50-99,137.21-21,722.01

Finding the Fourth Proportional to 66,105.50, 99,137.21 and 21,722.01

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Solution

The fourth proportional to 66,105.50, 99,137.21 and 21,722.01 is: 32,576.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,105.50 : 99,137.21 = 21,722.01 : x
  2. Step 2: Convert to fraction form
    66,105.50/99,137.21 = 21,722.01/x
  3. Step 3: Cross multiply
    66,105.50x = 99,137.21 × 21,722.01
  4. Step 4: Simplify right side
    66,105.50x = 2,153,459,358.38
  5. Step 5: Solve for x
    x = 2,153,459,358.38/66,105.50
  6. Step 6: Final answer
    x = 32,576.10

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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.