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Finding the Fourth Proportional to 71,361.76, 98,477.94 and 39,530.56

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Solution

The fourth proportional to 71,361.76, 98,477.94 and 39,530.56 is: 54,551.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,361.76 : 98,477.94 = 39,530.56 : x
  2. Step 2: Convert to fraction form
    71,361.76/98,477.94 = 39,530.56/x
  3. Step 3: Cross multiply
    71,361.76x = 98,477.94 × 39,530.56
  4. Step 4: Simplify right side
    71,361.76x = 3,892,888,115.85
  5. Step 5: Solve for x
    x = 3,892,888,115.85/71,361.76
  6. Step 6: Final answer
    x = 54,551.46

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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.