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Finding the Fourth Proportional to 73,994.40, 110,999.70 and 71,661.60

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Solution

The fourth proportional to 73,994.40, 110,999.70 and 71,661.60 is: 107,500.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,994.40 : 110,999.70 = 71,661.60 : x
  2. Step 2: Convert to fraction form
    73,994.40/110,999.70 = 71,661.60/x
  3. Step 3: Cross multiply
    73,994.40x = 110,999.70 × 71,661.60
  4. Step 4: Simplify right side
    73,994.40x = 7,954,416,101.52
  5. Step 5: Solve for x
    x = 7,954,416,101.52/73,994.40
  6. Step 6: Final answer
    x = 107,500.24

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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.