Home / 87,820.10-121,190.40-49,058.43

Finding the Fourth Proportional to 87,820.10, 121,190.40 and 49,058.43

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Solution

The fourth proportional to 87,820.10, 121,190.40 and 49,058.43 is: 67,699.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,820.10 : 121,190.40 = 49,058.43 : x
  2. Step 2: Convert to fraction form
    87,820.10/121,190.40 = 49,058.43/x
  3. Step 3: Cross multiply
    87,820.10x = 121,190.40 × 49,058.43
  4. Step 4: Simplify right side
    87,820.10x = 5,945,410,755.07
  5. Step 5: Solve for x
    x = 5,945,410,755.07/87,820.10
  6. Step 6: Final answer
    x = 67,699.89

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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.