Home / 52,078.20-78,121.35-17,021.40

Finding the Fourth Proportional to 52,078.20, 78,121.35 and 17,021.40

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Solution

The fourth proportional to 52,078.20, 78,121.35 and 17,021.40 is: 25,533.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,078.20 : 78,121.35 = 17,021.40 : x
  2. Step 2: Convert to fraction form
    52,078.20/78,121.35 = 17,021.40/x
  3. Step 3: Cross multiply
    52,078.20x = 78,121.35 × 17,021.40
  4. Step 4: Simplify right side
    52,078.20x = 1,329,734,704.34
  5. Step 5: Solve for x
    x = 1,329,734,704.34/52,078.20
  6. Step 6: Final answer
    x = 25,533.42

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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.