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Finding the Fourth Proportional to 69,125.76, 103,522.54 and 39,453.64

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Solution

The fourth proportional to 69,125.76, 103,522.54 and 39,453.64 is: 59,085.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,125.76 : 103,522.54 = 39,453.64 : x
  2. Step 2: Convert to fraction form
    69,125.76/103,522.54 = 39,453.64/x
  3. Step 3: Cross multiply
    69,125.76x = 103,522.54 × 39,453.64
  4. Step 4: Simplify right side
    69,125.76x = 4,084,341,025.05
  5. Step 5: Solve for x
    x = 4,084,341,025.05/69,125.76
  6. Step 6: Final answer
    x = 59,085.66

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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.