Home / 66,439.18-99,628.75-19,043.43

Finding the Fourth Proportional to 66,439.18, 99,628.75 and 19,043.43

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Solution

The fourth proportional to 66,439.18, 99,628.75 and 19,043.43 is: 28,556.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,439.18 : 99,628.75 = 19,043.43 : x
  2. Step 2: Convert to fraction form
    66,439.18/99,628.75 = 19,043.43/x
  3. Step 3: Cross multiply
    66,439.18x = 99,628.75 × 19,043.43
  4. Step 4: Simplify right side
    66,439.18x = 1,897,273,126.61
  5. Step 5: Solve for x
    x = 1,897,273,126.61/66,439.18
  6. Step 6: Final answer
    x = 28,556.54

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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.