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Finding the Fourth Proportional to 81,504.96, 122,015.04 and 72,952.08

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Solution

The fourth proportional to 81,504.96, 122,015.04 and 72,952.08 is: 109,211.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,504.96 : 122,015.04 = 72,952.08 : x
  2. Step 2: Convert to fraction form
    81,504.96/122,015.04 = 72,952.08/x
  3. Step 3: Cross multiply
    81,504.96x = 122,015.04 × 72,952.08
  4. Step 4: Simplify right side
    81,504.96x = 8,901,250,959.28
  5. Step 5: Solve for x
    x = 8,901,250,959.28/81,504.96
  6. Step 6: Final answer
    x = 109,211.16

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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.