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Finding the Fourth Proportional to 64,401.91, 96,616.53 and 19,424.63

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Solution

The fourth proportional to 64,401.91, 96,616.53 and 19,424.63 is: 29,141.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,401.91 : 96,616.53 = 19,424.63 : x
  2. Step 2: Convert to fraction form
    64,401.91/96,616.53 = 19,424.63/x
  3. Step 3: Cross multiply
    64,401.91x = 96,616.53 × 19,424.63
  4. Step 4: Simplify right side
    64,401.91x = 1,876,740,588.68
  5. Step 5: Solve for x
    x = 1,876,740,588.68/64,401.91
  6. Step 6: Final answer
    x = 29,141.07

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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.