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Finding the Fourth Proportional to 90,846.16, 135,978.18 and 48,620.68

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Solution

The fourth proportional to 90,846.16, 135,978.18 and 48,620.68 is: 72,775.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,846.16 : 135,978.18 = 48,620.68 : x
  2. Step 2: Convert to fraction form
    90,846.16/135,978.18 = 48,620.68/x
  3. Step 3: Cross multiply
    90,846.16x = 135,978.18 × 48,620.68
  4. Step 4: Simplify right side
    90,846.16x = 6,611,351,576.76
  5. Step 5: Solve for x
    x = 6,611,351,576.76/90,846.16
  6. Step 6: Final answer
    x = 72,775.25

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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.