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Finding the Fourth Proportional to 64,907.25, 89,581.73 and 39,771.33

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Solution

The fourth proportional to 64,907.25, 89,581.73 and 39,771.33 is: 54,890.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,907.25 : 89,581.73 = 39,771.33 : x
  2. Step 2: Convert to fraction form
    64,907.25/89,581.73 = 39,771.33/x
  3. Step 3: Cross multiply
    64,907.25x = 89,581.73 × 39,771.33
  4. Step 4: Simplify right side
    64,907.25x = 3,562,784,346.94
  5. Step 5: Solve for x
    x = 3,562,784,346.94/64,907.25
  6. Step 6: Final answer
    x = 54,890.39

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1.5x scale

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.