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Finding the Fourth Proportional to 84,544.64, 126,836.32 and 45,080.96

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Solution

The fourth proportional to 84,544.64, 126,836.32 and 45,080.96 is: 67,631.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,544.64 : 126,836.32 = 45,080.96 : x
  2. Step 2: Convert to fraction form
    84,544.64/126,836.32 = 45,080.96/x
  3. Step 3: Cross multiply
    84,544.64x = 126,836.32 × 45,080.96
  4. Step 4: Simplify right side
    84,544.64x = 5,717,903,068.47
  5. Step 5: Solve for x
    x = 5,717,903,068.47/84,544.64
  6. Step 6: Final answer
    x = 67,631.76

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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.