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Finding the Fourth Proportional to 85,425.84, 128,183.04 and 60,625.44

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Solution

The fourth proportional to 85,425.84, 128,183.04 and 60,625.44 is: 90,969.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,425.84 : 128,183.04 = 60,625.44 : x
  2. Step 2: Convert to fraction form
    85,425.84/128,183.04 = 60,625.44/x
  3. Step 3: Cross multiply
    85,425.84x = 128,183.04 × 60,625.44
  4. Step 4: Simplify right side
    85,425.84x = 7,771,153,200.54
  5. Step 5: Solve for x
    x = 7,771,153,200.54/85,425.84
  6. Step 6: Final answer
    x = 90,969.58

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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.