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Finding the Fourth Proportional to 57,457.56, 79,296.18 and 31,968.72

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Solution

The fourth proportional to 57,457.56, 79,296.18 and 31,968.72 is: 44,119.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,457.56 : 79,296.18 = 31,968.72 : x
  2. Step 2: Convert to fraction form
    57,457.56/79,296.18 = 31,968.72/x
  3. Step 3: Cross multiply
    57,457.56x = 79,296.18 × 31,968.72
  4. Step 4: Simplify right side
    57,457.56x = 2,534,997,375.49
  5. Step 5: Solve for x
    x = 2,534,997,375.49/57,457.56
  6. Step 6: Final answer
    x = 44,119.47

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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.