Home / 81,376.90-122,058.43-25,215.77

Finding the Fourth Proportional to 81,376.90, 122,058.43 and 25,215.77

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Solution

The fourth proportional to 81,376.90, 122,058.43 and 25,215.77 is: 37,821.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,376.90 : 122,058.43 = 25,215.77 : x
  2. Step 2: Convert to fraction form
    81,376.90/122,058.43 = 25,215.77/x
  3. Step 3: Cross multiply
    81,376.90x = 122,058.43 × 25,215.77
  4. Step 4: Simplify right side
    81,376.90x = 3,077,797,210.78
  5. Step 5: Solve for x
    x = 3,077,797,210.78/81,376.90
  6. Step 6: Final answer
    x = 37,821.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.