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Finding the Fourth Proportional to 69,197.21, 103,795.91 and 19,277.45

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Solution

The fourth proportional to 69,197.21, 103,795.91 and 19,277.45 is: 28,916.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,197.21 : 103,795.91 = 19,277.45 : x
  2. Step 2: Convert to fraction form
    69,197.21/103,795.91 = 19,277.45/x
  3. Step 3: Cross multiply
    69,197.21x = 103,795.91 × 19,277.45
  4. Step 4: Simplify right side
    69,197.21x = 2,000,920,465.23
  5. Step 5: Solve for x
    x = 2,000,920,465.23/69,197.21
  6. Step 6: Final answer
    x = 28,916.20

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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.