Home / 72,016.82-99,381.13-40,185.03

Finding the Fourth Proportional to 72,016.82, 99,381.13 and 40,185.03

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Solution

The fourth proportional to 72,016.82, 99,381.13 and 40,185.03 is: 55,454.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,016.82 : 99,381.13 = 40,185.03 : x
  2. Step 2: Convert to fraction form
    72,016.82/99,381.13 = 40,185.03/x
  3. Step 3: Cross multiply
    72,016.82x = 99,381.13 × 40,185.03
  4. Step 4: Simplify right side
    72,016.82x = 3,993,633,962.70
  5. Step 5: Solve for x
    x = 3,993,633,962.70/72,016.82
  6. Step 6: Final answer
    x = 55,454.18

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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.