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Finding the Fourth Proportional to 64,642.92, 96,964.74 and 19,664.88

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Solution

The fourth proportional to 64,642.92, 96,964.74 and 19,664.88 is: 29,497.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,642.92 : 96,964.74 = 19,664.88 : x
  2. Step 2: Convert to fraction form
    64,642.92/96,964.74 = 19,664.88/x
  3. Step 3: Cross multiply
    64,642.92x = 96,964.74 × 19,664.88
  4. Step 4: Simplify right side
    64,642.92x = 1,906,799,976.33
  5. Step 5: Solve for x
    x = 1,906,799,976.33/64,642.92
  6. Step 6: Final answer
    x = 29,497.43

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1.5x scale

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.