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Finding the Fourth Proportional to 80,828.58, 111,504.80 and 62,800.20

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Solution

The fourth proportional to 80,828.58, 111,504.80 and 62,800.20 is: 86,634.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,828.58 : 111,504.80 = 62,800.20 : x
  2. Step 2: Convert to fraction form
    80,828.58/111,504.80 = 62,800.20/x
  3. Step 3: Cross multiply
    80,828.58x = 111,504.80 × 62,800.20
  4. Step 4: Simplify right side
    80,828.58x = 7,002,523,740.96
  5. Step 5: Solve for x
    x = 7,002,523,740.96/80,828.58
  6. Step 6: Final answer
    x = 86,634.25

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1.5x scale

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.