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Finding the Fourth Proportional to 91,804.50, 137,709.54 and 28,626.90

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Solution

The fourth proportional to 91,804.50, 137,709.54 and 28,626.90 is: 42,941.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,804.50 : 137,709.54 = 28,626.90 : x
  2. Step 2: Convert to fraction form
    91,804.50/137,709.54 = 28,626.90/x
  3. Step 3: Cross multiply
    91,804.50x = 137,709.54 × 28,626.90
  4. Step 4: Simplify right side
    91,804.50x = 3,942,197,230.63
  5. Step 5: Solve for x
    x = 3,942,197,230.63/91,804.50
  6. Step 6: Final answer
    x = 42,941.22

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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.