Home / 76,896.32-115,344.48-30,171.20

Finding the Fourth Proportional to 76,896.32, 115,344.48 and 30,171.20

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Solution

The fourth proportional to 76,896.32, 115,344.48 and 30,171.20 is: 45,256.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,896.32 : 115,344.48 = 30,171.20 : x
  2. Step 2: Convert to fraction form
    76,896.32/115,344.48 = 30,171.20/x
  3. Step 3: Cross multiply
    76,896.32x = 115,344.48 × 30,171.20
  4. Step 4: Simplify right side
    76,896.32x = 3,480,081,374.98
  5. Step 5: Solve for x
    x = 3,480,081,374.98/76,896.32
  6. Step 6: Final answer
    x = 45,256.80

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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.