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Finding the Fourth Proportional to 69,078.97, 103,618.46 and 45,699.94

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Solution

The fourth proportional to 69,078.97, 103,618.46 and 45,699.94 is: 68,549.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,078.97 : 103,618.46 = 45,699.94 : x
  2. Step 2: Convert to fraction form
    69,078.97/103,618.46 = 45,699.94/x
  3. Step 3: Cross multiply
    69,078.97x = 103,618.46 × 45,699.94
  4. Step 4: Simplify right side
    69,078.97x = 4,735,357,404.89
  5. Step 5: Solve for x
    x = 4,735,357,404.89/69,078.97
  6. Step 6: Final answer
    x = 68,549.91

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1.5x scale

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.