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Finding the Fourth Proportional to 78,604.02, 108,600.75 and 54,836.80

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Solution

The fourth proportional to 78,604.02, 108,600.75 and 54,836.80 is: 75,763.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,604.02 : 108,600.75 = 54,836.80 : x
  2. Step 2: Convert to fraction form
    78,604.02/108,600.75 = 54,836.80/x
  3. Step 3: Cross multiply
    78,604.02x = 108,600.75 × 54,836.80
  4. Step 4: Simplify right side
    78,604.02x = 5,955,317,336.10
  5. Step 5: Solve for x
    x = 5,955,317,336.10/78,604.02
  6. Step 6: Final answer
    x = 75,763.52

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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.