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Finding the Fourth Proportional to 91,950.96, 137,876.36 and 28,743.80

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Solution

The fourth proportional to 91,950.96, 137,876.36 and 28,743.80 is: 43,100.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,950.96 : 137,876.36 = 28,743.80 : x
  2. Step 2: Convert to fraction form
    91,950.96/137,876.36 = 28,743.80/x
  3. Step 3: Cross multiply
    91,950.96x = 137,876.36 × 28,743.80
  4. Step 4: Simplify right side
    91,950.96x = 3,963,090,516.57
  5. Step 5: Solve for x
    x = 3,963,090,516.57/91,950.96
  6. Step 6: Final answer
    x = 43,100.05

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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.