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Finding the Fourth Proportional to 72,755.44, 100,408.28 and 40,926.69

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Solution

The fourth proportional to 72,755.44, 100,408.28 and 40,926.69 is: 56,482.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,755.44 : 100,408.28 = 40,926.69 : x
  2. Step 2: Convert to fraction form
    72,755.44/100,408.28 = 40,926.69/x
  3. Step 3: Cross multiply
    72,755.44x = 100,408.28 × 40,926.69
  4. Step 4: Simplify right side
    72,755.44x = 4,109,378,344.36
  5. Step 5: Solve for x
    x = 4,109,378,344.36/72,755.44
  6. Step 6: Final answer
    x = 56,482.08

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1.5x scale

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.