Home / 72,769.46-100,421.69-40,938.37

Finding the Fourth Proportional to 72,769.46, 100,421.69 and 40,938.37

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Solution

The fourth proportional to 72,769.46, 100,421.69 and 40,938.37 is: 56,494.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,769.46 : 100,421.69 = 40,938.37 : x
  2. Step 2: Convert to fraction form
    72,769.46/100,421.69 = 40,938.37/x
  3. Step 3: Cross multiply
    72,769.46x = 100,421.69 × 40,938.37
  4. Step 4: Simplify right side
    72,769.46x = 4,111,099,845.50
  5. Step 5: Solve for x
    x = 4,111,099,845.50/72,769.46
  6. Step 6: Final answer
    x = 56,494.86

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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.