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Finding the Fourth Proportional to 64,970.11, 89,658.07 and 36,676.99

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Solution

The fourth proportional to 64,970.11, 89,658.07 and 36,676.99 is: 50,613.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,970.11 : 89,658.07 = 36,676.99 : x
  2. Step 2: Convert to fraction form
    64,970.11/89,658.07 = 36,676.99/x
  3. Step 3: Cross multiply
    64,970.11x = 89,658.07 × 36,676.99
  4. Step 4: Simplify right side
    64,970.11x = 3,288,388,136.81
  5. Step 5: Solve for x
    x = 3,288,388,136.81/64,970.11
  6. Step 6: Final answer
    x = 50,613.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.