Home / 68,071.08-102,112.02-21,323.82

Finding the Fourth Proportional to 68,071.08, 102,112.02 and 21,323.82

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Solution

The fourth proportional to 68,071.08, 102,112.02 and 21,323.82 is: 31,987.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,071.08 : 102,112.02 = 21,323.82 : x
  2. Step 2: Convert to fraction form
    68,071.08/102,112.02 = 21,323.82/x
  3. Step 3: Cross multiply
    68,071.08x = 102,112.02 × 21,323.82
  4. Step 4: Simplify right side
    68,071.08x = 2,177,418,334.32
  5. Step 5: Solve for x
    x = 2,177,418,334.32/68,071.08
  6. Step 6: Final answer
    x = 31,987.42

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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.