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Finding the Fourth Proportional to 45,818.56, 68,730.12 and 14,250.13

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Solution

The fourth proportional to 45,818.56, 68,730.12 and 14,250.13 is: 21,375.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,818.56 : 68,730.12 = 14,250.13 : x
  2. Step 2: Convert to fraction form
    45,818.56/68,730.12 = 14,250.13/x
  3. Step 3: Cross multiply
    45,818.56x = 68,730.12 × 14,250.13
  4. Step 4: Simplify right side
    45,818.56x = 979,412,973.09
  5. Step 5: Solve for x
    x = 979,412,973.09/45,818.56
  6. Step 6: Final answer
    x = 21,375.90

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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.