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Finding the Fourth Proportional to 78,850.41, 108,815.63 and 43,043.73

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Solution

The fourth proportional to 78,850.41, 108,815.63 and 43,043.73 is: 59,401.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,850.41 : 108,815.63 = 43,043.73 : x
  2. Step 2: Convert to fraction form
    78,850.41/108,815.63 = 43,043.73/x
  3. Step 3: Cross multiply
    78,850.41x = 108,815.63 × 43,043.73
  4. Step 4: Simplify right side
    78,850.41x = 4,683,830,597.50
  5. Step 5: Solve for x
    x = 4,683,830,597.50/78,850.41
  6. Step 6: Final answer
    x = 59,401.47

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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.