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Finding the Fourth Proportional to 64,390.54, 96,584.79 and 17,643.42

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Solution

The fourth proportional to 64,390.54, 96,584.79 and 17,643.42 is: 26,464.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,390.54 : 96,584.79 = 17,643.42 : x
  2. Step 2: Convert to fraction form
    64,390.54/96,584.79 = 17,643.42/x
  3. Step 3: Cross multiply
    64,390.54x = 96,584.79 × 17,643.42
  4. Step 4: Simplify right side
    64,390.54x = 1,704,085,730.01
  5. Step 5: Solve for x
    x = 1,704,085,730.01/64,390.54
  6. Step 6: Final answer
    x = 26,464.85

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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.