Home / 69,428.23-95,775.69-40,729.12

Finding the Fourth Proportional to 69,428.23, 95,775.69 and 40,729.12

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Solution

The fourth proportional to 69,428.23, 95,775.69 and 40,729.12 is: 56,185.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,428.23 : 95,775.69 = 40,729.12 : x
  2. Step 2: Convert to fraction form
    69,428.23/95,775.69 = 40,729.12/x
  3. Step 3: Cross multiply
    69,428.23x = 95,775.69 × 40,729.12
  4. Step 4: Simplify right side
    69,428.23x = 3,900,859,571.09
  5. Step 5: Solve for x
    x = 3,900,859,571.09/69,428.23
  6. Step 6: Final answer
    x = 56,185.50

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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.