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Finding the Fourth Proportional to 72,563.66, 100,126.97 and 40,726.41

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Solution

The fourth proportional to 72,563.66, 100,126.97 and 40,726.41 is: 56,196.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,563.66 : 100,126.97 = 40,726.41 : x
  2. Step 2: Convert to fraction form
    72,563.66/100,126.97 = 40,726.41/x
  3. Step 3: Cross multiply
    72,563.66x = 100,126.97 × 40,726.41
  4. Step 4: Simplify right side
    72,563.66x = 4,077,811,605.89
  5. Step 5: Solve for x
    x = 4,077,811,605.89/72,563.66
  6. Step 6: Final answer
    x = 56,196.33

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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.