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Finding the Fourth Proportional to 69,266.15, 103,640.02 and 45,938.15

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Solution

The fourth proportional to 69,266.15, 103,640.02 and 45,938.15 is: 68,735.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,266.15 : 103,640.02 = 45,938.15 : x
  2. Step 2: Convert to fraction form
    69,266.15/103,640.02 = 45,938.15/x
  3. Step 3: Cross multiply
    69,266.15x = 103,640.02 × 45,938.15
  4. Step 4: Simplify right side
    69,266.15x = 4,761,030,784.76
  5. Step 5: Solve for x
    x = 4,761,030,784.76/69,266.15
  6. Step 6: Final answer
    x = 68,735.32

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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.