Home / 69,138.24-103,522.68-39,515.28

Finding the Fourth Proportional to 69,138.24, 103,522.68 and 39,515.28

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Solution

The fourth proportional to 69,138.24, 103,522.68 and 39,515.28 is: 59,167.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,138.24 : 103,522.68 = 39,515.28 : x
  2. Step 2: Convert to fraction form
    69,138.24/103,522.68 = 39,515.28/x
  3. Step 3: Cross multiply
    69,138.24x = 103,522.68 × 39,515.28
  4. Step 4: Simplify right side
    69,138.24x = 4,090,727,686.55
  5. Step 5: Solve for x
    x = 4,090,727,686.55/69,138.24
  6. Step 6: Final answer
    x = 59,167.37

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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.