Home / 81,832.32-122,588.16-42,415.44

Finding the Fourth Proportional to 81,832.32, 122,588.16 and 42,415.44

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Solution

The fourth proportional to 81,832.32, 122,588.16 and 42,415.44 is: 63,540.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,832.32 : 122,588.16 = 42,415.44 : x
  2. Step 2: Convert to fraction form
    81,832.32/122,588.16 = 42,415.44/x
  3. Step 3: Cross multiply
    81,832.32x = 122,588.16 × 42,415.44
  4. Step 4: Simplify right side
    81,832.32x = 5,199,630,745.19
  5. Step 5: Solve for x
    x = 5,199,630,745.19/81,832.32
  6. Step 6: Final answer
    x = 63,540.06

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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.