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Finding the Fourth Proportional to 68,352.48, 102,556.80 and 30,902.40

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Solution

The fourth proportional to 68,352.48, 102,556.80 and 30,902.40 is: 46,366.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,352.48 : 102,556.80 = 30,902.40 : x
  2. Step 2: Convert to fraction form
    68,352.48/102,556.80 = 30,902.40/x
  3. Step 3: Cross multiply
    68,352.48x = 102,556.80 × 30,902.40
  4. Step 4: Simplify right side
    68,352.48x = 3,169,251,256.32
  5. Step 5: Solve for x
    x = 3,169,251,256.32/68,352.48
  6. Step 6: Final answer
    x = 46,366.30

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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.