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Finding the Fourth Proportional to 45,079.92, 67,623.12 and 13,911.12

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Solution

The fourth proportional to 45,079.92, 67,623.12 and 13,911.12 is: 20,867.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,079.92 : 67,623.12 = 13,911.12 : x
  2. Step 2: Convert to fraction form
    45,079.92/67,623.12 = 13,911.12/x
  3. Step 3: Cross multiply
    45,079.92x = 67,623.12 × 13,911.12
  4. Step 4: Simplify right side
    45,079.92x = 940,713,337.09
  5. Step 5: Solve for x
    x = 940,713,337.09/45,079.92
  6. Step 6: Final answer
    x = 20,867.68

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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.