Home / 86,245.12-129,325.72-32,939.40

Finding the Fourth Proportional to 86,245.12, 129,325.72 and 32,939.40

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Solution

The fourth proportional to 86,245.12, 129,325.72 and 32,939.40 is: 49,393.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,245.12 : 129,325.72 = 32,939.40 : x
  2. Step 2: Convert to fraction form
    86,245.12/129,325.72 = 32,939.40/x
  3. Step 3: Cross multiply
    86,245.12x = 129,325.72 × 32,939.40
  4. Step 4: Simplify right side
    86,245.12x = 4,259,911,621.37
  5. Step 5: Solve for x
    x = 4,259,911,621.37/86,245.12
  6. Step 6: Final answer
    x = 49,393.07

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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.