Home / 90,660.81-135,954.32-40,727.50

Finding the Fourth Proportional to 90,660.81, 135,954.32 and 40,727.50

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Solution

The fourth proportional to 90,660.81, 135,954.32 and 40,727.50 is: 61,074.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,660.81 : 135,954.32 = 40,727.50 : x
  2. Step 2: Convert to fraction form
    90,660.81/135,954.32 = 40,727.50/x
  3. Step 3: Cross multiply
    90,660.81x = 135,954.32 × 40,727.50
  4. Step 4: Simplify right side
    90,660.81x = 5,537,079,024.28
  5. Step 5: Solve for x
    x = 5,537,079,024.28/90,660.81
  6. Step 6: Final answer
    x = 61,074.67

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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.