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Finding the Fourth Proportional to 57,410.56, 79,239.90 and 36,218.80

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Solution

The fourth proportional to 57,410.56, 79,239.90 and 36,218.80 is: 49,990.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,410.56 : 79,239.90 = 36,218.80 : x
  2. Step 2: Convert to fraction form
    57,410.56/79,239.90 = 36,218.80/x
  3. Step 3: Cross multiply
    57,410.56x = 79,239.90 × 36,218.80
  4. Step 4: Simplify right side
    57,410.56x = 2,869,974,090.12
  5. Step 5: Solve for x
    x = 2,869,974,090.12/57,410.56
  6. Step 6: Final answer
    x = 49,990.35

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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.