Home / 71,739.73-98,989.18-39,907.81

Finding the Fourth Proportional to 71,739.73, 98,989.18 and 39,907.81

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Solution

The fourth proportional to 71,739.73, 98,989.18 and 39,907.81 is: 55,066.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,739.73 : 98,989.18 = 39,907.81 : x
  2. Step 2: Convert to fraction form
    71,739.73/98,989.18 = 39,907.81/x
  3. Step 3: Cross multiply
    71,739.73x = 98,989.18 × 39,907.81
  4. Step 4: Simplify right side
    71,739.73x = 3,950,441,387.50
  5. Step 5: Solve for x
    x = 3,950,441,387.50/71,739.73
  6. Step 6: Final answer
    x = 55,066.30

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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.