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Finding the Fourth Proportional to 57,508.68, 79,393.13 and 40,333.79

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Solution

The fourth proportional to 57,508.68, 79,393.13 and 40,333.79 is: 55,682.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,508.68 : 79,393.13 = 40,333.79 : x
  2. Step 2: Convert to fraction form
    57,508.68/79,393.13 = 40,333.79/x
  3. Step 3: Cross multiply
    57,508.68x = 79,393.13 × 40,333.79
  4. Step 4: Simplify right side
    57,508.68x = 3,202,225,631.19
  5. Step 5: Solve for x
    x = 3,202,225,631.19/57,508.68
  6. Step 6: Final answer
    x = 55,682.47

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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.