Home / 76,990.10-115,427.55-41,969.30

Finding the Fourth Proportional to 76,990.10, 115,427.55 and 41,969.30

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Solution

The fourth proportional to 76,990.10, 115,427.55 and 41,969.30 is: 62,922.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,990.10 : 115,427.55 = 41,969.30 : x
  2. Step 2: Convert to fraction form
    76,990.10/115,427.55 = 41,969.30/x
  3. Step 3: Cross multiply
    76,990.10x = 115,427.55 × 41,969.30
  4. Step 4: Simplify right side
    76,990.10x = 4,844,413,474.22
  5. Step 5: Solve for x
    x = 4,844,413,474.22/76,990.10
  6. Step 6: Final answer
    x = 62,922.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.