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Finding the Fourth Proportional to 201,009.47, 301,450.21 and 66,042.20

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Solution

The fourth proportional to 201,009.47, 301,450.21 and 66,042.20 is: 99,042.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,009.47 : 301,450.21 = 66,042.20 : x
  2. Step 2: Convert to fraction form
    201,009.47/301,450.21 = 66,042.20/x
  3. Step 3: Cross multiply
    201,009.47x = 301,450.21 × 66,042.20
  4. Step 4: Simplify right side
    201,009.47x = 19,908,435,647.38
  5. Step 5: Solve for x
    x = 19,908,435,647.38/201,009.47
  6. Step 6: Final answer
    x = 99,042.28

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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.