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Finding the Fourth Proportional to 40,105.21, 60,164.70 and 13,803.70

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Solution

The fourth proportional to 40,105.21, 60,164.70 and 13,803.70 is: 20,707.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,105.21 : 60,164.70 = 13,803.70 : x
  2. Step 2: Convert to fraction form
    40,105.21/60,164.70 = 13,803.70/x
  3. Step 3: Cross multiply
    40,105.21x = 60,164.70 × 13,803.70
  4. Step 4: Simplify right side
    40,105.21x = 830,495,469.39
  5. Step 5: Solve for x
    x = 830,495,469.39/40,105.21
  6. Step 6: Final answer
    x = 20,707.92

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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.