Home / 90,670.36-135,969.91-30,682.32

Finding the Fourth Proportional to 90,670.36, 135,969.91 and 30,682.32

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Solution

The fourth proportional to 90,670.36, 135,969.91 and 30,682.32 is: 46,011.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,670.36 : 135,969.91 = 30,682.32 : x
  2. Step 2: Convert to fraction form
    90,670.36/135,969.91 = 30,682.32/x
  3. Step 3: Cross multiply
    90,670.36x = 135,969.91 × 30,682.32
  4. Step 4: Simplify right side
    90,670.36x = 4,171,872,288.99
  5. Step 5: Solve for x
    x = 4,171,872,288.99/90,670.36
  6. Step 6: Final answer
    x = 46,011.42

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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.