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Finding the Fourth Proportional to 64,695.94, 89,278.41 and 36,399.94

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Solution

The fourth proportional to 64,695.94, 89,278.41 and 36,399.94 is: 50,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,695.94 : 89,278.41 = 36,399.94 : x
  2. Step 2: Convert to fraction form
    64,695.94/89,278.41 = 36,399.94/x
  3. Step 3: Cross multiply
    64,695.94x = 89,278.41 × 36,399.94
  4. Step 4: Simplify right side
    64,695.94x = 3,249,728,767.30
  5. Step 5: Solve for x
    x = 3,249,728,767.30/64,695.94
  6. Step 6: Final answer
    x = 50,230.80

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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.