Home / 82,021.10-123,031.65-71,653.10

Finding the Fourth Proportional to 82,021.10, 123,031.65 and 71,653.10

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Solution

The fourth proportional to 82,021.10, 123,031.65 and 71,653.10 is: 107,479.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,021.10 : 123,031.65 = 71,653.10 : x
  2. Step 2: Convert to fraction form
    82,021.10/123,031.65 = 71,653.10/x
  3. Step 3: Cross multiply
    82,021.10x = 123,031.65 × 71,653.10
  4. Step 4: Simplify right side
    82,021.10x = 8,815,599,120.62
  5. Step 5: Solve for x
    x = 8,815,599,120.62/82,021.10
  6. Step 6: Final answer
    x = 107,479.65

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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.