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Finding the Fourth Proportional to 57,381.70, 79,164.57 and 42,310.03

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Solution

The fourth proportional to 57,381.70, 79,164.57 and 42,310.03 is: 58,371.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,381.70 : 79,164.57 = 42,310.03 : x
  2. Step 2: Convert to fraction form
    57,381.70/79,164.57 = 42,310.03/x
  3. Step 3: Cross multiply
    57,381.70x = 79,164.57 × 42,310.03
  4. Step 4: Simplify right side
    57,381.70x = 3,349,455,331.64
  5. Step 5: Solve for x
    x = 3,349,455,331.64/57,381.70
  6. Step 6: Final answer
    x = 58,371.49

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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.