Home / 69,086.16-103,629-19,166.16

Finding the Fourth Proportional to 69,086.16, 103,629 and 19,166.16

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Solution

The fourth proportional to 69,086.16, 103,629 and 19,166.16 is: 28,749.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,086.16 : 103,629 = 19,166.16 : x
  2. Step 2: Convert to fraction form
    69,086.16/103,629 = 19,166.16/x
  3. Step 3: Cross multiply
    69,086.16x = 103,629 × 19,166.16
  4. Step 4: Simplify right side
    69,086.16x = 1,986,169,994.64
  5. Step 5: Solve for x
    x = 1,986,169,994.64/69,086.16
  6. Step 6: Final answer
    x = 28,749.17

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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.