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Finding the Fourth Proportional to 64,428.95, 96,668.03 and 36,380.68

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Solution

The fourth proportional to 64,428.95, 96,668.03 and 36,380.68 is: 54,584.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,428.95 : 96,668.03 = 36,380.68 : x
  2. Step 2: Convert to fraction form
    64,428.95/96,668.03 = 36,380.68/x
  3. Step 3: Cross multiply
    64,428.95x = 96,668.03 × 36,380.68
  4. Step 4: Simplify right side
    64,428.95x = 3,516,848,514.94
  5. Step 5: Solve for x
    x = 3,516,848,514.94/64,428.95
  6. Step 6: Final answer
    x = 54,584.91

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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.