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Finding the Fourth Proportional to 45,771.40, 68,541.90 and 30,104.20

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Solution

The fourth proportional to 45,771.40, 68,541.90 and 30,104.20 is: 45,080.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,771.40 : 68,541.90 = 30,104.20 : x
  2. Step 2: Convert to fraction form
    45,771.40/68,541.90 = 30,104.20/x
  3. Step 3: Cross multiply
    45,771.40x = 68,541.90 × 30,104.20
  4. Step 4: Simplify right side
    45,771.40x = 2,063,399,065.98
  5. Step 5: Solve for x
    x = 2,063,399,065.98/45,771.40
  6. Step 6: Final answer
    x = 45,080.53

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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.