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Finding the Fourth Proportional to 69,987.57, 104,959.81 and 20,054.27

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Solution

The fourth proportional to 69,987.57, 104,959.81 and 20,054.27 is: 30,075.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,987.57 : 104,959.81 = 20,054.27 : x
  2. Step 2: Convert to fraction form
    69,987.57/104,959.81 = 20,054.27/x
  3. Step 3: Cross multiply
    69,987.57x = 104,959.81 × 20,054.27
  4. Step 4: Simplify right side
    69,987.57x = 2,104,892,368.89
  5. Step 5: Solve for x
    x = 2,104,892,368.89/69,987.57
  6. Step 6: Final answer
    x = 30,075.23

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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.