Home / 68,240.06-102,378.60-38,678.64

Finding the Fourth Proportional to 68,240.06, 102,378.60 and 38,678.64

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Solution

The fourth proportional to 68,240.06, 102,378.60 and 38,678.64 is: 58,028.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,240.06 : 102,378.60 = 38,678.64 : x
  2. Step 2: Convert to fraction form
    68,240.06/102,378.60 = 38,678.64/x
  3. Step 3: Cross multiply
    68,240.06x = 102,378.60 × 38,678.64
  4. Step 4: Simplify right side
    68,240.06x = 3,959,865,013.10
  5. Step 5: Solve for x
    x = 3,959,865,013.10/68,240.06
  6. Step 6: Final answer
    x = 58,028.46

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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.