Home / 81,381.96-112,346.03-54,203.25

Finding the Fourth Proportional to 81,381.96, 112,346.03 and 54,203.25

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Solution

The fourth proportional to 81,381.96, 112,346.03 and 54,203.25 is: 74,826.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,381.96 : 112,346.03 = 54,203.25 : x
  2. Step 2: Convert to fraction form
    81,381.96/112,346.03 = 54,203.25/x
  3. Step 3: Cross multiply
    81,381.96x = 112,346.03 × 54,203.25
  4. Step 4: Simplify right side
    81,381.96x = 6,089,520,086.11
  5. Step 5: Solve for x
    x = 6,089,520,086.11/81,381.96
  6. Step 6: Final answer
    x = 74,826.41

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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.