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Finding the Fourth Proportional to 71,340.98, 98,450.51 and 39,509.84

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Solution

The fourth proportional to 71,340.98, 98,450.51 and 39,509.84 is: 54,523.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,340.98 : 98,450.51 = 39,509.84 : x
  2. Step 2: Convert to fraction form
    71,340.98/98,450.51 = 39,509.84/x
  3. Step 3: Cross multiply
    71,340.98x = 98,450.51 × 39,509.84
  4. Step 4: Simplify right side
    71,340.98x = 3,889,763,946.60
  5. Step 5: Solve for x
    x = 3,889,763,946.60/71,340.98
  6. Step 6: Final answer
    x = 54,523.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.