Home / 66,136.10-99,215.48-21,775.43

Finding the Fourth Proportional to 66,136.10, 99,215.48 and 21,775.43

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Solution

The fourth proportional to 66,136.10, 99,215.48 and 21,775.43 is: 32,666.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,136.10 : 99,215.48 = 21,775.43 : x
  2. Step 2: Convert to fraction form
    66,136.10/99,215.48 = 21,775.43/x
  3. Step 3: Cross multiply
    66,136.10x = 99,215.48 × 21,775.43
  4. Step 4: Simplify right side
    66,136.10x = 2,160,460,042.13
  5. Step 5: Solve for x
    x = 2,160,460,042.13/66,136.10
  6. Step 6: Final answer
    x = 32,666.88

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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.