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Finding the Fourth Proportional to 73,973.40, 111,078.90 and 68,515.80

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Solution

The fourth proportional to 73,973.40, 111,078.90 and 68,515.80 is: 102,883.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,973.40 : 111,078.90 = 68,515.80 : x
  2. Step 2: Convert to fraction form
    73,973.40/111,078.90 = 68,515.80/x
  3. Step 3: Cross multiply
    73,973.40x = 111,078.90 × 68,515.80
  4. Step 4: Simplify right side
    73,973.40x = 7,610,659,696.62
  5. Step 5: Solve for x
    x = 7,610,659,696.62/73,973.40
  6. Step 6: Final answer
    x = 102,883.74

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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.