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Finding the Fourth Proportional to 73,015.10, 109,480.73 and 28,589.84

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Solution

The fourth proportional to 73,015.10, 109,480.73 and 28,589.84 is: 42,868.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,015.10 : 109,480.73 = 28,589.84 : x
  2. Step 2: Convert to fraction form
    73,015.10/109,480.73 = 28,589.84/x
  3. Step 3: Cross multiply
    73,015.10x = 109,480.73 × 28,589.84
  4. Step 4: Simplify right side
    73,015.10x = 3,130,036,898.96
  5. Step 5: Solve for x
    x = 3,130,036,898.96/73,015.10
  6. Step 6: Final answer
    x = 42,868.35

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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.