Home / 86,890.32-130,333.20-27,729.60

Finding the Fourth Proportional to 86,890.32, 130,333.20 and 27,729.60

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Solution

The fourth proportional to 86,890.32, 130,333.20 and 27,729.60 is: 41,593.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,890.32 : 130,333.20 = 27,729.60 : x
  2. Step 2: Convert to fraction form
    86,890.32/130,333.20 = 27,729.60/x
  3. Step 3: Cross multiply
    86,890.32x = 130,333.20 × 27,729.60
  4. Step 4: Simplify right side
    86,890.32x = 3,614,087,502.72
  5. Step 5: Solve for x
    x = 3,614,087,502.72/86,890.32
  6. Step 6: Final answer
    x = 41,593.67

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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.