Home / 90,675.84-135,992.16-38,086.32

Finding the Fourth Proportional to 90,675.84, 135,992.16 and 38,086.32

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Solution

The fourth proportional to 90,675.84, 135,992.16 and 38,086.32 is: 57,120.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,675.84 : 135,992.16 = 38,086.32 : x
  2. Step 2: Convert to fraction form
    90,675.84/135,992.16 = 38,086.32/x
  3. Step 3: Cross multiply
    90,675.84x = 135,992.16 × 38,086.32
  4. Step 4: Simplify right side
    90,675.84x = 5,179,440,923.25
  5. Step 5: Solve for x
    x = 5,179,440,923.25/90,675.84
  6. Step 6: Final answer
    x = 57,120.41

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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.