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Finding the Fourth Proportional to 30,136.80, 45,197.10 and 9,076.80

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Solution

The fourth proportional to 30,136.80, 45,197.10 and 9,076.80 is: 13,612.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,136.80 : 45,197.10 = 9,076.80 : x
  2. Step 2: Convert to fraction form
    30,136.80/45,197.10 = 9,076.80/x
  3. Step 3: Cross multiply
    30,136.80x = 45,197.10 × 9,076.80
  4. Step 4: Simplify right side
    30,136.80x = 410,245,037.28
  5. Step 5: Solve for x
    x = 410,245,037.28/30,136.80
  6. Step 6: Final answer
    x = 13,612.76

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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.