Home / 90,661.37-135,987.89-31,501.67

Finding the Fourth Proportional to 90,661.37, 135,987.89 and 31,501.67

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Solution

The fourth proportional to 90,661.37, 135,987.89 and 31,501.67 is: 47,251.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,661.37 : 135,987.89 = 31,501.67 : x
  2. Step 2: Convert to fraction form
    90,661.37/135,987.89 = 31,501.67/x
  3. Step 3: Cross multiply
    90,661.37x = 135,987.89 × 31,501.67
  4. Step 4: Simplify right side
    90,661.37x = 4,283,844,797.33
  5. Step 5: Solve for x
    x = 4,283,844,797.33/90,661.37
  6. Step 6: Final answer
    x = 47,251.05

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Similar ratio
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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.