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Finding the Fourth Proportional to 30,137.80, 45,198.60 and 9,077.80

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Solution

The fourth proportional to 30,137.80, 45,198.60 and 9,077.80 is: 13,614.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,137.80 : 45,198.60 = 9,077.80 : x
  2. Step 2: Convert to fraction form
    30,137.80/45,198.60 = 9,077.80/x
  3. Step 3: Cross multiply
    30,137.80x = 45,198.60 × 9,077.80
  4. Step 4: Simplify right side
    30,137.80x = 410,303,851.08
  5. Step 5: Solve for x
    x = 410,303,851.08/30,137.80
  6. Step 6: Final answer
    x = 13,614.26

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1.5x scale

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.