Home / 68,008.36-102,012.56-20,623.36

Finding the Fourth Proportional to 68,008.36, 102,012.56 and 20,623.36

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Solution

The fourth proportional to 68,008.36, 102,012.56 and 20,623.36 is: 30,935.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,008.36 : 102,012.56 = 20,623.36 : x
  2. Step 2: Convert to fraction form
    68,008.36/102,012.56 = 20,623.36/x
  3. Step 3: Cross multiply
    68,008.36x = 102,012.56 × 20,623.36
  4. Step 4: Simplify right side
    68,008.36x = 2,103,841,749.40
  5. Step 5: Solve for x
    x = 2,103,841,749.40/68,008.36
  6. Step 6: Final answer
    x = 30,935.05

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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.