Home / 85,075.12-117,405.60-47,351.92

Finding the Fourth Proportional to 85,075.12, 117,405.60 and 47,351.92

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Solution

The fourth proportional to 85,075.12, 117,405.60 and 47,351.92 is: 65,346.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,075.12 : 117,405.60 = 47,351.92 : x
  2. Step 2: Convert to fraction form
    85,075.12/117,405.60 = 47,351.92/x
  3. Step 3: Cross multiply
    85,075.12x = 117,405.60 × 47,351.92
  4. Step 4: Simplify right side
    85,075.12x = 5,559,380,578.75
  5. Step 5: Solve for x
    x = 5,559,380,578.75/85,075.12
  6. Step 6: Final answer
    x = 65,346.73

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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.