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Finding the Fourth Proportional to 90,917.98, 125,458.30 and 52,678.98

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Solution

The fourth proportional to 90,917.98, 125,458.30 and 52,678.98 is: 72,692.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,917.98 : 125,458.30 = 52,678.98 : x
  2. Step 2: Convert to fraction form
    90,917.98/125,458.30 = 52,678.98/x
  3. Step 3: Cross multiply
    90,917.98x = 125,458.30 × 52,678.98
  4. Step 4: Simplify right side
    90,917.98x = 6,609,015,276.53
  5. Step 5: Solve for x
    x = 6,609,015,276.53/90,917.98
  6. Step 6: Final answer
    x = 72,692.06

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