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Finding the Fourth Proportional to 91,898.80, 137,868.68 and 50,334.64

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Solution

The fourth proportional to 91,898.80, 137,868.68 and 50,334.64 is: 75,513.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,898.80 : 137,868.68 = 50,334.64 : x
  2. Step 2: Convert to fraction form
    91,898.80/137,868.68 = 50,334.64/x
  3. Step 3: Cross multiply
    91,898.80x = 137,868.68 × 50,334.64
  4. Step 4: Simplify right side
    91,898.80x = 6,939,570,375.08
  5. Step 5: Solve for x
    x = 6,939,570,375.08/91,898.80
  6. Step 6: Final answer
    x = 75,513.18

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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.