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Finding the Fourth Proportional to 66,053.53, 99,080.30 and 21,668.37

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Solution

The fourth proportional to 66,053.53, 99,080.30 and 21,668.37 is: 32,502.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,053.53 : 99,080.30 = 21,668.37 : x
  2. Step 2: Convert to fraction form
    66,053.53/99,080.30 = 21,668.37/x
  3. Step 3: Cross multiply
    66,053.53x = 99,080.30 × 21,668.37
  4. Step 4: Simplify right side
    66,053.53x = 2,146,908,600.11
  5. Step 5: Solve for x
    x = 2,146,908,600.11/66,053.53
  6. Step 6: Final answer
    x = 32,502.56

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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.