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Finding the Fourth Proportional to 57,270.78, 79,017.53 and 37,128.51

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Solution

The fourth proportional to 57,270.78, 79,017.53 and 37,128.51 is: 51,226.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,270.78 : 79,017.53 = 37,128.51 : x
  2. Step 2: Convert to fraction form
    57,270.78/79,017.53 = 37,128.51/x
  3. Step 3: Cross multiply
    57,270.78x = 79,017.53 × 37,128.51
  4. Step 4: Simplify right side
    57,270.78x = 2,933,802,967.14
  5. Step 5: Solve for x
    x = 2,933,802,967.14/57,270.78
  6. Step 6: Final answer
    x = 51,226.87

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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.