Home / 52,140.80-78,211.20-17,081.60

Finding the Fourth Proportional to 52,140.80, 78,211.20 and 17,081.60

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Solution

The fourth proportional to 52,140.80, 78,211.20 and 17,081.60 is: 25,622.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,140.80 : 78,211.20 = 17,081.60 : x
  2. Step 2: Convert to fraction form
    52,140.80/78,211.20 = 17,081.60/x
  3. Step 3: Cross multiply
    52,140.80x = 78,211.20 × 17,081.60
  4. Step 4: Simplify right side
    52,140.80x = 1,335,972,433.92
  5. Step 5: Solve for x
    x = 1,335,972,433.92/52,140.80
  6. Step 6: Final answer
    x = 25,622.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.