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Finding the Fourth Proportional to 87,359.26, 130,961.31 and 34,038.88

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Solution

The fourth proportional to 87,359.26, 130,961.31 and 34,038.88 is: 51,028.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,359.26 : 130,961.31 = 34,038.88 : x
  2. Step 2: Convert to fraction form
    87,359.26/130,961.31 = 34,038.88/x
  3. Step 3: Cross multiply
    87,359.26x = 130,961.31 × 34,038.88
  4. Step 4: Simplify right side
    87,359.26x = 4,457,776,315.73
  5. Step 5: Solve for x
    x = 4,457,776,315.73/87,359.26
  6. Step 6: Final answer
    x = 51,028.09

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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.