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Finding the Fourth Proportional to 72,601.80, 108,756.90 and 41,400.60

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Solution

The fourth proportional to 72,601.80, 108,756.90 and 41,400.60 is: 62,017.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,601.80 : 108,756.90 = 41,400.60 : x
  2. Step 2: Convert to fraction form
    72,601.80/108,756.90 = 41,400.60/x
  3. Step 3: Cross multiply
    72,601.80x = 108,756.90 × 41,400.60
  4. Step 4: Simplify right side
    72,601.80x = 4,502,600,914.14
  5. Step 5: Solve for x
    x = 4,502,600,914.14/72,601.80
  6. Step 6: Final answer
    x = 62,017.76

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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.