Home / 90,049.55-135,069.42-45,675.14

Finding the Fourth Proportional to 90,049.55, 135,069.42 and 45,675.14

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Solution

The fourth proportional to 90,049.55, 135,069.42 and 45,675.14 is: 68,510.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,049.55 : 135,069.42 = 45,675.14 : x
  2. Step 2: Convert to fraction form
    90,049.55/135,069.42 = 45,675.14/x
  3. Step 3: Cross multiply
    90,049.55x = 135,069.42 × 45,675.14
  4. Step 4: Simplify right side
    90,049.55x = 6,169,313,992.87
  5. Step 5: Solve for x
    x = 6,169,313,992.87/90,049.55
  6. Step 6: Final answer
    x = 68,510.22

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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.