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Finding the Fourth Proportional to 69,911.69, 104,339.36 and 65,171.36

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Solution

The fourth proportional to 69,911.69, 104,339.36 and 65,171.36 is: 97,264.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,911.69 : 104,339.36 = 65,171.36 : x
  2. Step 2: Convert to fraction form
    69,911.69/104,339.36 = 65,171.36/x
  3. Step 3: Cross multiply
    69,911.69x = 104,339.36 × 65,171.36
  4. Step 4: Simplify right side
    69,911.69x = 6,799,938,416.51
  5. Step 5: Solve for x
    x = 6,799,938,416.51/69,911.69
  6. Step 6: Final answer
    x = 97,264.69

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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.