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Finding the Fourth Proportional to 78,804.36, 118,206.54 and 47,573.64

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Solution

The fourth proportional to 78,804.36, 118,206.54 and 47,573.64 is: 71,360.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,804.36 : 118,206.54 = 47,573.64 : x
  2. Step 2: Convert to fraction form
    78,804.36/118,206.54 = 47,573.64/x
  3. Step 3: Cross multiply
    78,804.36x = 118,206.54 × 47,573.64
  4. Step 4: Simplify right side
    78,804.36x = 5,623,515,379.61
  5. Step 5: Solve for x
    x = 5,623,515,379.61/78,804.36
  6. Step 6: Final answer
    x = 71,360.46

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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.