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Finding the Fourth Proportional to 64,788.80, 89,410.02 and 36,111.41

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Solution

The fourth proportional to 64,788.80, 89,410.02 and 36,111.41 is: 49,834.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,788.80 : 89,410.02 = 36,111.41 : x
  2. Step 2: Convert to fraction form
    64,788.80/89,410.02 = 36,111.41/x
  3. Step 3: Cross multiply
    64,788.80x = 89,410.02 × 36,111.41
  4. Step 4: Simplify right side
    64,788.80x = 3,228,721,262.72
  5. Step 5: Solve for x
    x = 3,228,721,262.72/64,788.80
  6. Step 6: Final answer
    x = 49,834.56

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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.