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Finding the Fourth Proportional to 49,903.80, 74,855.70 and 30,220.80

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Solution

The fourth proportional to 49,903.80, 74,855.70 and 30,220.80 is: 45,331.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,903.80 : 74,855.70 = 30,220.80 : x
  2. Step 2: Convert to fraction form
    49,903.80/74,855.70 = 30,220.80/x
  3. Step 3: Cross multiply
    49,903.80x = 74,855.70 × 30,220.80
  4. Step 4: Simplify right side
    49,903.80x = 2,262,199,138.56
  5. Step 5: Solve for x
    x = 2,262,199,138.56/49,903.80
  6. Step 6: Final answer
    x = 45,331.20

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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.