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Finding the Fourth Proportional to 99,858.42, 149,787.63 and 40,683.67

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Solution

The fourth proportional to 99,858.42, 149,787.63 and 40,683.67 is: 61,025.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,858.42 : 149,787.63 = 40,683.67 : x
  2. Step 2: Convert to fraction form
    99,858.42/149,787.63 = 40,683.67/x
  3. Step 3: Cross multiply
    99,858.42x = 149,787.63 × 40,683.67
  4. Step 4: Simplify right side
    99,858.42x = 6,093,910,134.53
  5. Step 5: Solve for x
    x = 6,093,910,134.53/99,858.42
  6. Step 6: Final answer
    x = 61,025.50

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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.