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Finding the Fourth Proportional to 89,608.44, 134,329.32 and 39,661.80

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Solution

The fourth proportional to 89,608.44, 134,329.32 and 39,661.80 is: 59,455.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,608.44 : 134,329.32 = 39,661.80 : x
  2. Step 2: Convert to fraction form
    89,608.44/134,329.32 = 39,661.80/x
  3. Step 3: Cross multiply
    89,608.44x = 134,329.32 × 39,661.80
  4. Step 4: Simplify right side
    89,608.44x = 5,327,742,623.98
  5. Step 5: Solve for x
    x = 5,327,742,623.98/89,608.44
  6. Step 6: Final answer
    x = 59,455.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.