Home / 86,749.94-130,125.84-30,579.60

Finding the Fourth Proportional to 86,749.94, 130,125.84 and 30,579.60

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Solution

The fourth proportional to 86,749.94, 130,125.84 and 30,579.60 is: 45,869.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,749.94 : 130,125.84 = 30,579.60 : x
  2. Step 2: Convert to fraction form
    86,749.94/130,125.84 = 30,579.60/x
  3. Step 3: Cross multiply
    86,749.94x = 130,125.84 × 30,579.60
  4. Step 4: Simplify right side
    86,749.94x = 3,979,196,136.86
  5. Step 5: Solve for x
    x = 3,979,196,136.86/86,749.94
  6. Step 6: Final answer
    x = 45,869.73

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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.