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Finding the Fourth Proportional to 66,580.48, 99,860.48 and 19,825.92

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Solution

The fourth proportional to 66,580.48, 99,860.48 and 19,825.92 is: 29,735.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,580.48 : 99,860.48 = 19,825.92 : x
  2. Step 2: Convert to fraction form
    66,580.48/99,860.48 = 19,825.92/x
  3. Step 3: Cross multiply
    66,580.48x = 99,860.48 × 19,825.92
  4. Step 4: Simplify right side
    66,580.48x = 1,979,825,887.64
  5. Step 5: Solve for x
    x = 1,979,825,887.64/66,580.48
  6. Step 6: Final answer
    x = 29,735.83

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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.