Home / 81,040.36-111,701.82-54,173.05

Finding the Fourth Proportional to 81,040.36, 111,701.82 and 54,173.05

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Solution

The fourth proportional to 81,040.36, 111,701.82 and 54,173.05 is: 74,669.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,040.36 : 111,701.82 = 54,173.05 : x
  2. Step 2: Convert to fraction form
    81,040.36/111,701.82 = 54,173.05/x
  3. Step 3: Cross multiply
    81,040.36x = 111,701.82 × 54,173.05
  4. Step 4: Simplify right side
    81,040.36x = 6,051,228,279.95
  5. Step 5: Solve for x
    x = 6,051,228,279.95/81,040.36
  6. Step 6: Final answer
    x = 74,669.32

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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.