Home / 89,965.28-135,029.57-47,880.81

Finding the Fourth Proportional to 89,965.28, 135,029.57 and 47,880.81

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Solution

The fourth proportional to 89,965.28, 135,029.57 and 47,880.81 is: 71,864.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,965.28 : 135,029.57 = 47,880.81 : x
  2. Step 2: Convert to fraction form
    89,965.28/135,029.57 = 47,880.81/x
  3. Step 3: Cross multiply
    89,965.28x = 135,029.57 × 47,880.81
  4. Step 4: Simplify right side
    89,965.28x = 6,465,324,946.15
  5. Step 5: Solve for x
    x = 6,465,324,946.15/89,965.28
  6. Step 6: Final answer
    x = 71,864.67

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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.