Home / 81,415.44-112,290.12-54,549.36

Finding the Fourth Proportional to 81,415.44, 112,290.12 and 54,549.36

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Solution

The fourth proportional to 81,415.44, 112,290.12 and 54,549.36 is: 75,235.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,415.44 : 112,290.12 = 54,549.36 : x
  2. Step 2: Convert to fraction form
    81,415.44/112,290.12 = 54,549.36/x
  3. Step 3: Cross multiply
    81,415.44x = 112,290.12 × 54,549.36
  4. Step 4: Simplify right side
    81,415.44x = 6,125,354,180.32
  5. Step 5: Solve for x
    x = 6,125,354,180.32/81,415.44
  6. Step 6: Final answer
    x = 75,235.78

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1.5x scale

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.