Home / 87,804.98-121,157.82-53,331.78

Finding the Fourth Proportional to 87,804.98, 121,157.82 and 53,331.78

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Solution

The fourth proportional to 87,804.98, 121,157.82 and 53,331.78 is: 73,589.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,804.98 : 121,157.82 = 53,331.78 : x
  2. Step 2: Convert to fraction form
    87,804.98/121,157.82 = 53,331.78/x
  3. Step 3: Cross multiply
    87,804.98x = 121,157.82 × 53,331.78
  4. Step 4: Simplify right side
    87,804.98x = 6,461,562,201.52
  5. Step 5: Solve for x
    x = 6,461,562,201.52/87,804.98
  6. Step 6: Final answer
    x = 73,589.93

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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.