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Finding the Fourth Proportional to 68,238.65, 102,415.48 and 28,824.05

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Solution

The fourth proportional to 68,238.65, 102,415.48 and 28,824.05 is: 43,260.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,238.65 : 102,415.48 = 28,824.05 : x
  2. Step 2: Convert to fraction form
    68,238.65/102,415.48 = 28,824.05/x
  3. Step 3: Cross multiply
    68,238.65x = 102,415.48 × 28,824.05
  4. Step 4: Simplify right side
    68,238.65x = 2,952,028,332.16
  5. Step 5: Solve for x
    x = 2,952,028,332.16/68,238.65
  6. Step 6: Final answer
    x = 43,260.36

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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.