Home / 81,587.53-122,348.08-25,408.77

Finding the Fourth Proportional to 81,587.53, 122,348.08 and 25,408.77

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Solution

The fourth proportional to 81,587.53, 122,348.08 and 25,408.77 is: 38,102.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,587.53 : 122,348.08 = 25,408.77 : x
  2. Step 2: Convert to fraction form
    81,587.53/122,348.08 = 25,408.77/x
  3. Step 3: Cross multiply
    81,587.53x = 122,348.08 × 25,408.77
  4. Step 4: Simplify right side
    81,587.53x = 3,108,714,224.66
  5. Step 5: Solve for x
    x = 3,108,714,224.66/81,587.53
  6. Step 6: Final answer
    x = 38,102.81

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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.