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Finding the Fourth Proportional to 72,975.48, 100,703.88 and 41,143.92

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Solution

The fourth proportional to 72,975.48, 100,703.88 and 41,143.92 is: 56,777.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,975.48 : 100,703.88 = 41,143.92 : x
  2. Step 2: Convert to fraction form
    72,975.48/100,703.88 = 41,143.92/x
  3. Step 3: Cross multiply
    72,975.48x = 100,703.88 × 41,143.92
  4. Step 4: Simplify right side
    72,975.48x = 4,143,352,382.41
  5. Step 5: Solve for x
    x = 4,143,352,382.41/72,975.48
  6. Step 6: Final answer
    x = 56,777.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.