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Finding the Fourth Proportional to 66,064.69, 99,097.08 and 19,317.61

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Solution

The fourth proportional to 66,064.69, 99,097.08 and 19,317.61 is: 28,976.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,064.69 : 99,097.08 = 19,317.61 : x
  2. Step 2: Convert to fraction form
    66,064.69/99,097.08 = 19,317.61/x
  3. Step 3: Cross multiply
    66,064.69x = 99,097.08 × 19,317.61
  4. Step 4: Simplify right side
    66,064.69x = 1,914,318,743.58
  5. Step 5: Solve for x
    x = 1,914,318,743.58/66,064.69
  6. Step 6: Final answer
    x = 28,976.43

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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.