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Finding the Fourth Proportional to 64,784.40, 89,400.83 and 36,104.19

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Solution

The fourth proportional to 64,784.40, 89,400.83 and 36,104.19 is: 49,822.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,784.40 : 89,400.83 = 36,104.19 : x
  2. Step 2: Convert to fraction form
    64,784.40/89,400.83 = 36,104.19/x
  3. Step 3: Cross multiply
    64,784.40x = 89,400.83 × 36,104.19
  4. Step 4: Simplify right side
    64,784.40x = 3,227,744,371.96
  5. Step 5: Solve for x
    x = 3,227,744,371.96/64,784.40
  6. Step 6: Final answer
    x = 49,822.86

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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.