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Finding the Fourth Proportional to 35,449.50, 48,918.78 and 20,331.66

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Solution

The fourth proportional to 35,449.50, 48,918.78 and 20,331.66 is: 28,056.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,449.50 : 48,918.78 = 20,331.66 : x
  2. Step 2: Convert to fraction form
    35,449.50/48,918.78 = 20,331.66/x
  3. Step 3: Cross multiply
    35,449.50x = 48,918.78 × 20,331.66
  4. Step 4: Simplify right side
    35,449.50x = 994,600,002.57
  5. Step 5: Solve for x
    x = 994,600,002.57/35,449.50
  6. Step 6: Final answer
    x = 28,056.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.