Home / 87,143.18-130,662.06-39,102.98

Finding the Fourth Proportional to 87,143.18, 130,662.06 and 39,102.98

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Solution

The fourth proportional to 87,143.18, 130,662.06 and 39,102.98 is: 58,630.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,143.18 : 130,662.06 = 39,102.98 : x
  2. Step 2: Convert to fraction form
    87,143.18/130,662.06 = 39,102.98/x
  3. Step 3: Cross multiply
    87,143.18x = 130,662.06 × 39,102.98
  4. Step 4: Simplify right side
    87,143.18x = 5,109,275,918.94
  5. Step 5: Solve for x
    x = 5,109,275,918.94/87,143.18
  6. Step 6: Final answer
    x = 58,630.82

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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.