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Finding the Fourth Proportional to 61,978.80, 92,928.78 and 28,654.32

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Solution

The fourth proportional to 61,978.80, 92,928.78 and 28,654.32 is: 42,963.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,978.80 : 92,928.78 = 28,654.32 : x
  2. Step 2: Convert to fraction form
    61,978.80/92,928.78 = 28,654.32/x
  3. Step 3: Cross multiply
    61,978.80x = 92,928.78 × 28,654.32
  4. Step 4: Simplify right side
    61,978.80x = 2,662,810,999.33
  5. Step 5: Solve for x
    x = 2,662,810,999.33/61,978.80
  6. Step 6: Final answer
    x = 42,963.26

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.