Home / 85,832.75-128,583.06-48,278.72

Finding the Fourth Proportional to 85,832.75, 128,583.06 and 48,278.72

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Solution

The fourth proportional to 85,832.75, 128,583.06 and 48,278.72 is: 72,324.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,832.75 : 128,583.06 = 48,278.72 : x
  2. Step 2: Convert to fraction form
    85,832.75/128,583.06 = 48,278.72/x
  3. Step 3: Cross multiply
    85,832.75x = 128,583.06 × 48,278.72
  4. Step 4: Simplify right side
    85,832.75x = 6,207,824,907.57
  5. Step 5: Solve for x
    x = 6,207,824,907.57/85,832.75
  6. Step 6: Final answer
    x = 72,324.67

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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.