Home / 73,007.10-109,502.55-20,421.90

Finding the Fourth Proportional to 73,007.10, 109,502.55 and 20,421.90

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Solution

The fourth proportional to 73,007.10, 109,502.55 and 20,421.90 is: 30,630.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,007.10 : 109,502.55 = 20,421.90 : x
  2. Step 2: Convert to fraction form
    73,007.10/109,502.55 = 20,421.90/x
  3. Step 3: Cross multiply
    73,007.10x = 109,502.55 × 20,421.90
  4. Step 4: Simplify right side
    73,007.10x = 2,236,250,125.85
  5. Step 5: Solve for x
    x = 2,236,250,125.85/73,007.10
  6. Step 6: Final answer
    x = 30,630.58

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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.