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Finding the Fourth Proportional to 68,570.51, 102,400.07 and 67,828.25

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Solution

The fourth proportional to 68,570.51, 102,400.07 and 67,828.25 is: 101,291.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,570.51 : 102,400.07 = 67,828.25 : x
  2. Step 2: Convert to fraction form
    68,570.51/102,400.07 = 67,828.25/x
  3. Step 3: Cross multiply
    68,570.51x = 102,400.07 × 67,828.25
  4. Step 4: Simplify right side
    68,570.51x = 6,945,617,035.98
  5. Step 5: Solve for x
    x = 6,945,617,035.98/68,570.51
  6. Step 6: Final answer
    x = 101,291.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.