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Finding the Fourth Proportional to 45,359.55, 68,042.76 and 12,079.48

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Solution

The fourth proportional to 45,359.55, 68,042.76 and 12,079.48 is: 18,120.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,359.55 : 68,042.76 = 12,079.48 : x
  2. Step 2: Convert to fraction form
    45,359.55/68,042.76 = 12,079.48/x
  3. Step 3: Cross multiply
    45,359.55x = 68,042.76 × 12,079.48
  4. Step 4: Simplify right side
    45,359.55x = 821,921,158.56
  5. Step 5: Solve for x
    x = 821,921,158.56/45,359.55
  6. Step 6: Final answer
    x = 18,120.13

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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.