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Finding the Fourth Proportional to 90,003.60, 135,005.40 and 27,674.10

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Solution

The fourth proportional to 90,003.60, 135,005.40 and 27,674.10 is: 41,511.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,003.60 : 135,005.40 = 27,674.10 : x
  2. Step 2: Convert to fraction form
    90,003.60/135,005.40 = 27,674.10/x
  3. Step 3: Cross multiply
    90,003.60x = 135,005.40 × 27,674.10
  4. Step 4: Simplify right side
    90,003.60x = 3,736,152,940.14
  5. Step 5: Solve for x
    x = 3,736,152,940.14/90,003.60
  6. Step 6: Final answer
    x = 41,511.15

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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.