Home / 76,040.40-104,790.60-66,087.12

Finding the Fourth Proportional to 76,040.40, 104,790.60 and 66,087.12

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Solution

The fourth proportional to 76,040.40, 104,790.60 and 66,087.12 is: 91,074.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,040.40 : 104,790.60 = 66,087.12 : x
  2. Step 2: Convert to fraction form
    76,040.40/104,790.60 = 66,087.12/x
  3. Step 3: Cross multiply
    76,040.40x = 104,790.60 × 66,087.12
  4. Step 4: Simplify right side
    76,040.40x = 6,925,308,957.07
  5. Step 5: Solve for x
    x = 6,925,308,957.07/76,040.40
  6. Step 6: Final answer
    x = 91,074.07

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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.