Home / 74,469.12-102,769.20-40,935.12

Finding the Fourth Proportional to 74,469.12, 102,769.20 and 40,935.12

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Solution

The fourth proportional to 74,469.12, 102,769.20 and 40,935.12 is: 56,491.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,469.12 : 102,769.20 = 40,935.12 : x
  2. Step 2: Convert to fraction form
    74,469.12/102,769.20 = 40,935.12/x
  3. Step 3: Cross multiply
    74,469.12x = 102,769.20 × 40,935.12
  4. Step 4: Simplify right side
    74,469.12x = 4,206,869,534.30
  5. Step 5: Solve for x
    x = 4,206,869,534.30/74,469.12
  6. Step 6: Final answer
    x = 56,491.46

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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.