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Finding the Fourth Proportional to 91,812.28, 137,672.94 and 32,639.08

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Solution

The fourth proportional to 91,812.28, 137,672.94 and 32,639.08 is: 48,942.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,812.28 : 137,672.94 = 32,639.08 : x
  2. Step 2: Convert to fraction form
    91,812.28/137,672.94 = 32,639.08/x
  3. Step 3: Cross multiply
    91,812.28x = 137,672.94 × 32,639.08
  4. Step 4: Simplify right side
    91,812.28x = 4,493,518,102.50
  5. Step 5: Solve for x
    x = 4,493,518,102.50/91,812.28
  6. Step 6: Final answer
    x = 48,942.45

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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.