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Finding the Fourth Proportional to 73,202.40, 109,722.60 and 28,814.40

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Solution

The fourth proportional to 73,202.40, 109,722.60 and 28,814.40 is: 43,189.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,202.40 : 109,722.60 = 28,814.40 : x
  2. Step 2: Convert to fraction form
    73,202.40/109,722.60 = 28,814.40/x
  3. Step 3: Cross multiply
    73,202.40x = 109,722.60 × 28,814.40
  4. Step 4: Simplify right side
    73,202.40x = 3,161,590,885.44
  5. Step 5: Solve for x
    x = 3,161,590,885.44/73,202.40
  6. Step 6: Final answer
    x = 43,189.72

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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.