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Finding the Fourth Proportional to 61,020.87, 84,215.88 and 37,161.51

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Solution

The fourth proportional to 61,020.87, 84,215.88 and 37,161.51 is: 51,287.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,020.87 : 84,215.88 = 37,161.51 : x
  2. Step 2: Convert to fraction form
    61,020.87/84,215.88 = 37,161.51/x
  3. Step 3: Cross multiply
    61,020.87x = 84,215.88 × 37,161.51
  4. Step 4: Simplify right side
    61,020.87x = 3,129,589,266.78
  5. Step 5: Solve for x
    x = 3,129,589,266.78/61,020.87
  6. Step 6: Final answer
    x = 51,287.20

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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.