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Finding the Fourth Proportional to 45,063.09, 67,610.70 and 20,100.90

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Solution

The fourth proportional to 45,063.09, 67,610.70 and 20,100.90 is: 30,158.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,063.09 : 67,610.70 = 20,100.90 : x
  2. Step 2: Convert to fraction form
    45,063.09/67,610.70 = 20,100.90/x
  3. Step 3: Cross multiply
    45,063.09x = 67,610.70 × 20,100.90
  4. Step 4: Simplify right side
    45,063.09x = 1,359,035,919.63
  5. Step 5: Solve for x
    x = 1,359,035,919.63/45,063.09
  6. Step 6: Final answer
    x = 30,158.52

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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.