Home / 86,992.32-120,043.72-51,175.41

Finding the Fourth Proportional to 86,992.32, 120,043.72 and 51,175.41

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Solution

The fourth proportional to 86,992.32, 120,043.72 and 51,175.41 is: 70,618.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,992.32 : 120,043.72 = 51,175.41 : x
  2. Step 2: Convert to fraction form
    86,992.32/120,043.72 = 51,175.41/x
  3. Step 3: Cross multiply
    86,992.32x = 120,043.72 × 51,175.41
  4. Step 4: Simplify right side
    86,992.32x = 6,143,286,460.99
  5. Step 5: Solve for x
    x = 6,143,286,460.99/86,992.32
  6. Step 6: Final answer
    x = 70,618.72

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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.