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Finding the Fourth Proportional to 68,488.52, 102,740.98 and 29,040.50

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Solution

The fourth proportional to 68,488.52, 102,740.98 and 29,040.50 is: 43,564.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,488.52 : 102,740.98 = 29,040.50 : x
  2. Step 2: Convert to fraction form
    68,488.52/102,740.98 = 29,040.50/x
  3. Step 3: Cross multiply
    68,488.52x = 102,740.98 × 29,040.50
  4. Step 4: Simplify right side
    68,488.52x = 2,983,649,429.69
  5. Step 5: Solve for x
    x = 2,983,649,429.69/68,488.52
  6. Step 6: Final answer
    x = 43,564.23

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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.