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Finding the Fourth Proportional to 64,579.50, 89,119.71 and 36,285.21

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Solution

The fourth proportional to 64,579.50, 89,119.71 and 36,285.21 is: 50,073.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,579.50 : 89,119.71 = 36,285.21 : x
  2. Step 2: Convert to fraction form
    64,579.50/89,119.71 = 36,285.21/x
  3. Step 3: Cross multiply
    64,579.50x = 89,119.71 × 36,285.21
  4. Step 4: Simplify right side
    64,579.50x = 3,233,727,392.49
  5. Step 5: Solve for x
    x = 3,233,727,392.49/64,579.50
  6. Step 6: Final answer
    x = 50,073.59

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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.