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Finding the Fourth Proportional to 78,900.94, 118,054.92 and 47,194.30

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Solution

The fourth proportional to 78,900.94, 118,054.92 and 47,194.30 is: 70,614.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,900.94 : 118,054.92 = 47,194.30 : x
  2. Step 2: Convert to fraction form
    78,900.94/118,054.92 = 47,194.30/x
  3. Step 3: Cross multiply
    78,900.94x = 118,054.92 × 47,194.30
  4. Step 4: Simplify right side
    78,900.94x = 5,571,519,310.96
  5. Step 5: Solve for x
    x = 5,571,519,310.96/78,900.94
  6. Step 6: Final answer
    x = 70,614.11

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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.