Home / 71,551.20-98,735.72-39,717.60

Finding the Fourth Proportional to 71,551.20, 98,735.72 and 39,717.60

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Solution

The fourth proportional to 71,551.20, 98,735.72 and 39,717.60 is: 54,807.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,551.20 : 98,735.72 = 39,717.60 : x
  2. Step 2: Convert to fraction form
    71,551.20/98,735.72 = 39,717.60/x
  3. Step 3: Cross multiply
    71,551.20x = 98,735.72 × 39,717.60
  4. Step 4: Simplify right side
    71,551.20x = 3,921,545,832.67
  5. Step 5: Solve for x
    x = 3,921,545,832.67/71,551.20
  6. Step 6: Final answer
    x = 54,807.55

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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.