Home / 85,517.78-117,937.62-55,271.30

Finding the Fourth Proportional to 85,517.78, 117,937.62 and 55,271.30

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Solution

The fourth proportional to 85,517.78, 117,937.62 and 55,271.30 is: 76,224.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,517.78 : 117,937.62 = 55,271.30 : x
  2. Step 2: Convert to fraction form
    85,517.78/117,937.62 = 55,271.30/x
  3. Step 3: Cross multiply
    85,517.78x = 117,937.62 × 55,271.30
  4. Step 4: Simplify right side
    85,517.78x = 6,518,564,986.62
  5. Step 5: Solve for x
    x = 6,518,564,986.62/85,517.78
  6. Step 6: Final answer
    x = 76,224.68

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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.