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Finding the Fourth Proportional to 69,075, 103,614.74 and 19,155.64

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Solution

The fourth proportional to 69,075, 103,614.74 and 19,155.64 is: 28,734.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,075 : 103,614.74 = 19,155.64 : x
  2. Step 2: Convert to fraction form
    69,075/103,614.74 = 19,155.64/x
  3. Step 3: Cross multiply
    69,075x = 103,614.74 × 19,155.64
  4. Step 4: Simplify right side
    69,075x = 1,984,806,658.13
  5. Step 5: Solve for x
    x = 1,984,806,658.13/69,075
  6. Step 6: Final answer
    x = 28,734.08

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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.