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Finding the Fourth Proportional to 64,890.84, 89,550.66 and 36,591

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Solution

The fourth proportional to 64,890.84, 89,550.66 and 36,591 is: 50,496.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,890.84 : 89,550.66 = 36,591 : x
  2. Step 2: Convert to fraction form
    64,890.84/89,550.66 = 36,591/x
  3. Step 3: Cross multiply
    64,890.84x = 89,550.66 × 36,591
  4. Step 4: Simplify right side
    64,890.84x = 3,276,748,200.06
  5. Step 5: Solve for x
    x = 3,276,748,200.06/64,890.84
  6. Step 6: Final answer
    x = 50,496.31

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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.