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Finding the Fourth Proportional to 85,933.44, 128,994.36 and 68,277.60

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Solution

The fourth proportional to 85,933.44, 128,994.36 and 68,277.60 is: 102,491.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,933.44 : 128,994.36 = 68,277.60 : x
  2. Step 2: Convert to fraction form
    85,933.44/128,994.36 = 68,277.60/x
  3. Step 3: Cross multiply
    85,933.44x = 128,994.36 × 68,277.60
  4. Step 4: Simplify right side
    85,933.44x = 8,807,425,314.34
  5. Step 5: Solve for x
    x = 8,807,425,314.34/85,933.44
  6. Step 6: Final answer
    x = 102,491.25

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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.