Home / 90,568.14-135,852.21-28,243.50

Finding the Fourth Proportional to 90,568.14, 135,852.21 and 28,243.50

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Solution

The fourth proportional to 90,568.14, 135,852.21 and 28,243.50 is: 42,365.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,568.14 : 135,852.21 = 28,243.50 : x
  2. Step 2: Convert to fraction form
    90,568.14/135,852.21 = 28,243.50/x
  3. Step 3: Cross multiply
    90,568.14x = 135,852.21 × 28,243.50
  4. Step 4: Simplify right side
    90,568.14x = 3,836,941,893.14
  5. Step 5: Solve for x
    x = 3,836,941,893.14/90,568.14
  6. Step 6: Final answer
    x = 42,365.25

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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.