Home / 87,046.60-130,578-30,881.20

Finding the Fourth Proportional to 87,046.60, 130,578 and 30,881.20

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Solution

The fourth proportional to 87,046.60, 130,578 and 30,881.20 is: 46,324.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,046.60 : 130,578 = 30,881.20 : x
  2. Step 2: Convert to fraction form
    87,046.60/130,578 = 30,881.20/x
  3. Step 3: Cross multiply
    87,046.60x = 130,578 × 30,881.20
  4. Step 4: Simplify right side
    87,046.60x = 4,032,405,333.60
  5. Step 5: Solve for x
    x = 4,032,405,333.60/87,046.60
  6. Step 6: Final answer
    x = 46,324.67

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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.