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Finding the Fourth Proportional to 90,774.76, 125,268.48 and 49,938

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Solution

The fourth proportional to 90,774.76, 125,268.48 and 49,938 is: 68,914.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,774.76 : 125,268.48 = 49,938 : x
  2. Step 2: Convert to fraction form
    90,774.76/125,268.48 = 49,938/x
  3. Step 3: Cross multiply
    90,774.76x = 125,268.48 × 49,938
  4. Step 4: Simplify right side
    90,774.76x = 6,255,657,354.24
  5. Step 5: Solve for x
    x = 6,255,657,354.24/90,774.76
  6. Step 6: Final answer
    x = 68,914.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.