Home / 71,485.20-98,661.41-39,664.35

Finding the Fourth Proportional to 71,485.20, 98,661.41 and 39,664.35

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Solution

The fourth proportional to 71,485.20, 98,661.41 and 39,664.35 is: 54,743.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,485.20 : 98,661.41 = 39,664.35 : x
  2. Step 2: Convert to fraction form
    71,485.20/98,661.41 = 39,664.35/x
  3. Step 3: Cross multiply
    71,485.20x = 98,661.41 × 39,664.35
  4. Step 4: Simplify right side
    71,485.20x = 3,913,340,697.73
  5. Step 5: Solve for x
    x = 3,913,340,697.73/71,485.20
  6. Step 6: Final answer
    x = 54,743.37

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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.