Home / 90,315.82-124,639.35-50,028.78

Finding the Fourth Proportional to 90,315.82, 124,639.35 and 50,028.78

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Solution

The fourth proportional to 90,315.82, 124,639.35 and 50,028.78 is: 69,041.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,315.82 : 124,639.35 = 50,028.78 : x
  2. Step 2: Convert to fraction form
    90,315.82/124,639.35 = 50,028.78/x
  3. Step 3: Cross multiply
    90,315.82x = 124,639.35 × 50,028.78
  4. Step 4: Simplify right side
    90,315.82x = 6,235,554,620.49
  5. Step 5: Solve for x
    x = 6,235,554,620.49/90,315.82
  6. Step 6: Final answer
    x = 69,041.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.