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Finding the Fourth Proportional to 69,699.64, 104,550 and 17,109.58

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Solution

The fourth proportional to 69,699.64, 104,550 and 17,109.58 is: 25,664.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,699.64 : 104,550 = 17,109.58 : x
  2. Step 2: Convert to fraction form
    69,699.64/104,550 = 17,109.58/x
  3. Step 3: Cross multiply
    69,699.64x = 104,550 × 17,109.58
  4. Step 4: Simplify right side
    69,699.64x = 1,788,806,589.00
  5. Step 5: Solve for x
    x = 1,788,806,589.00/69,699.64
  6. Step 6: Final answer
    x = 25,664.50

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1.5x scale

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.