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Finding the Fourth Proportional to 78,846.91, 108,809.12 and 43,037.75

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Solution

The fourth proportional to 78,846.91, 108,809.12 and 43,037.75 is: 59,392.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,846.91 : 108,809.12 = 43,037.75 : x
  2. Step 2: Convert to fraction form
    78,846.91/108,809.12 = 43,037.75/x
  3. Step 3: Cross multiply
    78,846.91x = 108,809.12 × 43,037.75
  4. Step 4: Simplify right side
    78,846.91x = 4,682,899,704.28
  5. Step 5: Solve for x
    x = 4,682,899,704.28/78,846.91
  6. Step 6: Final answer
    x = 59,392.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.