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Finding the Fourth Proportional to 69,255.40, 103,623.90 and 45,927.40

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Solution

The fourth proportional to 69,255.40, 103,623.90 and 45,927.40 is: 68,719.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,255.40 : 103,623.90 = 45,927.40 : x
  2. Step 2: Convert to fraction form
    69,255.40/103,623.90 = 45,927.40/x
  3. Step 3: Cross multiply
    69,255.40x = 103,623.90 × 45,927.40
  4. Step 4: Simplify right side
    69,255.40x = 4,759,176,304.86
  5. Step 5: Solve for x
    x = 4,759,176,304.86/69,255.40
  6. Step 6: Final answer
    x = 68,719.21

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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.