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Finding the Fourth Proportional to 82,919.52, 124,379.28 and 30,300.30

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Solution

The fourth proportional to 82,919.52, 124,379.28 and 30,300.30 is: 45,450.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,919.52 : 124,379.28 = 30,300.30 : x
  2. Step 2: Convert to fraction form
    82,919.52/124,379.28 = 30,300.30/x
  3. Step 3: Cross multiply
    82,919.52x = 124,379.28 × 30,300.30
  4. Step 4: Simplify right side
    82,919.52x = 3,768,729,497.78
  5. Step 5: Solve for x
    x = 3,768,729,497.78/82,919.52
  6. Step 6: Final answer
    x = 45,450.45

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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.