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Finding the Fourth Proportional to 80,658, 111,308.04 and 45,330

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Solution

The fourth proportional to 80,658, 111,308.04 and 45,330 is: 62,555.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,658 : 111,308.04 = 45,330 : x
  2. Step 2: Convert to fraction form
    80,658/111,308.04 = 45,330/x
  3. Step 3: Cross multiply
    80,658x = 111,308.04 × 45,330
  4. Step 4: Simplify right side
    80,658x = 5,045,593,453.20
  5. Step 5: Solve for x
    x = 5,045,593,453.20/80,658
  6. Step 6: Final answer
    x = 62,555.40

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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.