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Finding the Fourth Proportional to 39,473.98, 54,477.78 and 21,571.62

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Solution

The fourth proportional to 39,473.98, 54,477.78 and 21,571.62 is: 29,770.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,473.98 : 54,477.78 = 21,571.62 : x
  2. Step 2: Convert to fraction form
    39,473.98/54,477.78 = 21,571.62/x
  3. Step 3: Cross multiply
    39,473.98x = 54,477.78 × 21,571.62
  4. Step 4: Simplify right side
    39,473.98x = 1,175,173,968.60
  5. Step 5: Solve for x
    x = 1,175,173,968.60/39,473.98
  6. Step 6: Final answer
    x = 29,770.85

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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.