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Finding the Fourth Proportional to 78,804.37, 118,194.14 and 34,419.20

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Solution

The fourth proportional to 78,804.37, 118,194.14 and 34,419.20 is: 51,623.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,804.37 : 118,194.14 = 34,419.20 : x
  2. Step 2: Convert to fraction form
    78,804.37/118,194.14 = 34,419.20/x
  3. Step 3: Cross multiply
    78,804.37x = 118,194.14 × 34,419.20
  4. Step 4: Simplify right side
    78,804.37x = 4,068,148,042.22
  5. Step 5: Solve for x
    x = 4,068,148,042.22/78,804.37
  6. Step 6: Final answer
    x = 51,623.38

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1.5x scale

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.