Home / 81,453.06-122,171.09-31,531.95

Finding the Fourth Proportional to 81,453.06, 122,171.09 and 31,531.95

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Solution

The fourth proportional to 81,453.06, 122,171.09 and 31,531.95 is: 47,294.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,453.06 : 122,171.09 = 31,531.95 : x
  2. Step 2: Convert to fraction form
    81,453.06/122,171.09 = 31,531.95/x
  3. Step 3: Cross multiply
    81,453.06x = 122,171.09 × 31,531.95
  4. Step 4: Simplify right side
    81,453.06x = 3,852,292,543.67
  5. Step 5: Solve for x
    x = 3,852,292,543.67/81,453.06
  6. Step 6: Final answer
    x = 47,294.63

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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.