Home / 77,141.44-115,777.91-30,427.12

Finding the Fourth Proportional to 77,141.44, 115,777.91 and 30,427.12

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Solution

The fourth proportional to 77,141.44, 115,777.91 and 30,427.12 is: 45,666.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,141.44 : 115,777.91 = 30,427.12 : x
  2. Step 2: Convert to fraction form
    77,141.44/115,777.91 = 30,427.12/x
  3. Step 3: Cross multiply
    77,141.44x = 115,777.91 × 30,427.12
  4. Step 4: Simplify right side
    77,141.44x = 3,522,788,360.92
  5. Step 5: Solve for x
    x = 3,522,788,360.92/77,141.44
  6. Step 6: Final answer
    x = 45,666.61

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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.