Home / 71,241.20-98,313.72-39,409.28

Finding the Fourth Proportional to 71,241.20, 98,313.72 and 39,409.28

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Solution

The fourth proportional to 71,241.20, 98,313.72 and 39,409.28 is: 54,385.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,241.20 : 98,313.72 = 39,409.28 : x
  2. Step 2: Convert to fraction form
    71,241.20/98,313.72 = 39,409.28/x
  3. Step 3: Cross multiply
    71,241.20x = 98,313.72 × 39,409.28
  4. Step 4: Simplify right side
    71,241.20x = 3,874,472,919.32
  5. Step 5: Solve for x
    x = 3,874,472,919.32/71,241.20
  6. Step 6: Final answer
    x = 54,385.28

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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.