Home / 85,078.11-117,405.80-47,351.55

Finding the Fourth Proportional to 85,078.11, 117,405.80 and 47,351.55

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Solution

The fourth proportional to 85,078.11, 117,405.80 and 47,351.55 is: 65,344.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,078.11 : 117,405.80 = 47,351.55 : x
  2. Step 2: Convert to fraction form
    85,078.11/117,405.80 = 47,351.55/x
  3. Step 3: Cross multiply
    85,078.11x = 117,405.80 × 47,351.55
  4. Step 4: Simplify right side
    85,078.11x = 5,559,346,372.23
  5. Step 5: Solve for x
    x = 5,559,346,372.23/85,078.11
  6. Step 6: Final answer
    x = 65,344.03

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1.5x scale

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.