Home / 72,769.52-100,408.92-40,926.80

Finding the Fourth Proportional to 72,769.52, 100,408.92 and 40,926.80

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Solution

The fourth proportional to 72,769.52, 100,408.92 and 40,926.80 is: 56,471.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,769.52 : 100,408.92 = 40,926.80 : x
  2. Step 2: Convert to fraction form
    72,769.52/100,408.92 = 40,926.80/x
  3. Step 3: Cross multiply
    72,769.52x = 100,408.92 × 40,926.80
  4. Step 4: Simplify right side
    72,769.52x = 4,109,415,787.06
  5. Step 5: Solve for x
    x = 4,109,415,787.06/72,769.52
  6. Step 6: Final answer
    x = 56,471.66

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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.