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Finding the Fourth Proportional to 72,950.64, 100,670.49 and 41,118.90

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Solution

The fourth proportional to 72,950.64, 100,670.49 and 41,118.90 is: 56,743.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,950.64 : 100,670.49 = 41,118.90 : x
  2. Step 2: Convert to fraction form
    72,950.64/100,670.49 = 41,118.90/x
  3. Step 3: Cross multiply
    72,950.64x = 100,670.49 × 41,118.90
  4. Step 4: Simplify right side
    72,950.64x = 4,139,459,811.26
  5. Step 5: Solve for x
    x = 4,139,459,811.26/72,950.64
  6. Step 6: Final answer
    x = 56,743.30

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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.