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Finding the Fourth Proportional to 68,436.48, 102,710.01 and 29,021.28

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Solution

The fourth proportional to 68,436.48, 102,710.01 and 29,021.28 is: 43,555.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,436.48 : 102,710.01 = 29,021.28 : x
  2. Step 2: Convert to fraction form
    68,436.48/102,710.01 = 29,021.28/x
  3. Step 3: Cross multiply
    68,436.48x = 102,710.01 × 29,021.28
  4. Step 4: Simplify right side
    68,436.48x = 2,980,775,959.01
  5. Step 5: Solve for x
    x = 2,980,775,959.01/68,436.48
  6. Step 6: Final answer
    x = 43,555.37

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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.