Home / 85,242.21-117,684.66-75,784.61

Finding the Fourth Proportional to 85,242.21, 117,684.66 and 75,784.61

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Solution

The fourth proportional to 85,242.21, 117,684.66 and 75,784.61 is: 104,627.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,242.21 : 117,684.66 = 75,784.61 : x
  2. Step 2: Convert to fraction form
    85,242.21/117,684.66 = 75,784.61/x
  3. Step 3: Cross multiply
    85,242.21x = 117,684.66 × 75,784.61
  4. Step 4: Simplify right side
    85,242.21x = 8,918,685,093.74
  5. Step 5: Solve for x
    x = 8,918,685,093.74/85,242.21
  6. Step 6: Final answer
    x = 104,627.57

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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.