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Finding the Fourth Proportional to 64,284.98, 96,431.99 and 19,905.89

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Solution

The fourth proportional to 64,284.98, 96,431.99 and 19,905.89 is: 29,860.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,284.98 : 96,431.99 = 19,905.89 : x
  2. Step 2: Convert to fraction form
    64,284.98/96,431.99 = 19,905.89/x
  3. Step 3: Cross multiply
    64,284.98x = 96,431.99 × 19,905.89
  4. Step 4: Simplify right side
    64,284.98x = 1,919,564,003.73
  5. Step 5: Solve for x
    x = 1,919,564,003.73/64,284.98
  6. Step 6: Final answer
    x = 29,860.23

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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.