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Finding the Fourth Proportional to 66,366, 99,551.49 and 18,339.48

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Solution

The fourth proportional to 66,366, 99,551.49 and 18,339.48 is: 27,509.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,366 : 99,551.49 = 18,339.48 : x
  2. Step 2: Convert to fraction form
    66,366/99,551.49 = 18,339.48/x
  3. Step 3: Cross multiply
    66,366x = 99,551.49 × 18,339.48
  4. Step 4: Simplify right side
    66,366x = 1,825,722,559.83
  5. Step 5: Solve for x
    x = 1,825,722,559.83/66,366
  6. Step 6: Final answer
    x = 27,509.91

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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.