Home / 66,078.71-91,087.98-40,537.79

Finding the Fourth Proportional to 66,078.71, 91,087.98 and 40,537.79

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Solution

The fourth proportional to 66,078.71, 91,087.98 and 40,537.79 is: 55,880.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,078.71 : 91,087.98 = 40,537.79 : x
  2. Step 2: Convert to fraction form
    66,078.71/91,087.98 = 40,537.79/x
  3. Step 3: Cross multiply
    66,078.71x = 91,087.98 × 40,537.79
  4. Step 4: Simplify right side
    66,078.71x = 3,692,505,404.76
  5. Step 5: Solve for x
    x = 3,692,505,404.76/66,078.71
  6. Step 6: Final answer
    x = 55,880.41

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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.