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Finding the Fourth Proportional to 78,773.44, 118,125.60 and 28,840.60

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Solution

The fourth proportional to 78,773.44, 118,125.60 and 28,840.60 is: 43,248.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,773.44 : 118,125.60 = 28,840.60 : x
  2. Step 2: Convert to fraction form
    78,773.44/118,125.60 = 28,840.60/x
  3. Step 3: Cross multiply
    78,773.44x = 118,125.60 × 28,840.60
  4. Step 4: Simplify right side
    78,773.44x = 3,406,813,179.36
  5. Step 5: Solve for x
    x = 3,406,813,179.36/78,773.44
  6. Step 6: Final answer
    x = 43,248.25

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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.