Home / 87,694.56-121,018.13-47,408.31

Finding the Fourth Proportional to 87,694.56, 121,018.13 and 47,408.31

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Solution

The fourth proportional to 87,694.56, 121,018.13 and 47,408.31 is: 65,423.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,694.56 : 121,018.13 = 47,408.31 : x
  2. Step 2: Convert to fraction form
    87,694.56/121,018.13 = 47,408.31/x
  3. Step 3: Cross multiply
    87,694.56x = 121,018.13 × 47,408.31
  4. Step 4: Simplify right side
    87,694.56x = 5,737,265,052.29
  5. Step 5: Solve for x
    x = 5,737,265,052.29/87,694.56
  6. Step 6: Final answer
    x = 65,423.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.