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Finding the Fourth Proportional to 78,843.77, 108,803.61 and 43,033.46

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Solution

The fourth proportional to 78,843.77, 108,803.61 and 43,033.46 is: 59,385.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,843.77 : 108,803.61 = 43,033.46 : x
  2. Step 2: Convert to fraction form
    78,843.77/108,803.61 = 43,033.46/x
  3. Step 3: Cross multiply
    78,843.77x = 108,803.61 × 43,033.46
  4. Step 4: Simplify right side
    78,843.77x = 4,682,195,798.79
  5. Step 5: Solve for x
    x = 4,682,195,798.79/78,843.77
  6. Step 6: Final answer
    x = 59,385.74

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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.