Home / 68,071.23-102,106.89-21,327.75

Finding the Fourth Proportional to 68,071.23, 102,106.89 and 21,327.75

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Solution

The fourth proportional to 68,071.23, 102,106.89 and 21,327.75 is: 31,991.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,071.23 : 102,106.89 = 21,327.75 : x
  2. Step 2: Convert to fraction form
    68,071.23/102,106.89 = 21,327.75/x
  3. Step 3: Cross multiply
    68,071.23x = 102,106.89 × 21,327.75
  4. Step 4: Simplify right side
    68,071.23x = 2,177,710,223.20
  5. Step 5: Solve for x
    x = 2,177,710,223.20/68,071.23
  6. Step 6: Final answer
    x = 31,991.64

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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.