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Finding the Fourth Proportional to 64,762.54, 89,382.22 and 39,273.05

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Solution

The fourth proportional to 64,762.54, 89,382.22 and 39,273.05 is: 54,202.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,762.54 : 89,382.22 = 39,273.05 : x
  2. Step 2: Convert to fraction form
    64,762.54/89,382.22 = 39,273.05/x
  3. Step 3: Cross multiply
    64,762.54x = 89,382.22 × 39,273.05
  4. Step 4: Simplify right side
    64,762.54x = 3,510,312,520.44
  5. Step 5: Solve for x
    x = 3,510,312,520.44/64,762.54
  6. Step 6: Final answer
    x = 54,202.83

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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.