Home / 87,096.36-130,650-71,317.08

Finding the Fourth Proportional to 87,096.36, 130,650 and 71,317.08

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Solution

The fourth proportional to 87,096.36, 130,650 and 71,317.08 is: 106,980.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,096.36 : 130,650 = 71,317.08 : x
  2. Step 2: Convert to fraction form
    87,096.36/130,650 = 71,317.08/x
  3. Step 3: Cross multiply
    87,096.36x = 130,650 × 71,317.08
  4. Step 4: Simplify right side
    87,096.36x = 9,317,576,502
  5. Step 5: Solve for x
    x = 9,317,576,502/87,096.36
  6. Step 6: Final answer
    x = 106,980.09

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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.