Home / 85,808.12-118,375.18-53,994.56

Finding the Fourth Proportional to 85,808.12, 118,375.18 and 53,994.56

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Solution

The fourth proportional to 85,808.12, 118,375.18 and 53,994.56 is: 74,487.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,808.12 : 118,375.18 = 53,994.56 : x
  2. Step 2: Convert to fraction form
    85,808.12/118,375.18 = 53,994.56/x
  3. Step 3: Cross multiply
    85,808.12x = 118,375.18 × 53,994.56
  4. Step 4: Simplify right side
    85,808.12x = 6,391,615,759.02
  5. Step 5: Solve for x
    x = 6,391,615,759.02/85,808.12
  6. Step 6: Final answer
    x = 74,487.31

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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.