Home / 85,242.21-117,684.65-75,784.60

Finding the Fourth Proportional to 85,242.21, 117,684.65 and 75,784.60

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Solution

The fourth proportional to 85,242.21, 117,684.65 and 75,784.60 is: 104,627.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,242.21 : 117,684.65 = 75,784.60 : x
  2. Step 2: Convert to fraction form
    85,242.21/117,684.65 = 75,784.60/x
  3. Step 3: Cross multiply
    85,242.21x = 117,684.65 × 75,784.60
  4. Step 4: Simplify right side
    85,242.21x = 8,918,684,126.39
  5. Step 5: Solve for x
    x = 8,918,684,126.39/85,242.21
  6. Step 6: Final answer
    x = 104,627.56

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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.