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Finding the Fourth Proportional to 74,054.80, 102,195.20 and 68,030

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Solution

The fourth proportional to 74,054.80, 102,195.20 and 68,030 is: 93,881.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,054.80 : 102,195.20 = 68,030 : x
  2. Step 2: Convert to fraction form
    74,054.80/102,195.20 = 68,030/x
  3. Step 3: Cross multiply
    74,054.80x = 102,195.20 × 68,030
  4. Step 4: Simplify right side
    74,054.80x = 6,952,339,456
  5. Step 5: Solve for x
    x = 6,952,339,456/74,054.80
  6. Step 6: Final answer
    x = 93,881.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.