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Finding the Fourth Proportional to 71,040.36, 98,032.74 and 39,208.80

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Solution

The fourth proportional to 71,040.36, 98,032.74 and 39,208.80 is: 54,106.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,040.36 : 98,032.74 = 39,208.80 : x
  2. Step 2: Convert to fraction form
    71,040.36/98,032.74 = 39,208.80/x
  3. Step 3: Cross multiply
    71,040.36x = 98,032.74 × 39,208.80
  4. Step 4: Simplify right side
    71,040.36x = 3,843,746,096.11
  5. Step 5: Solve for x
    x = 3,843,746,096.11/71,040.36
  6. Step 6: Final answer
    x = 54,106.51

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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.