Home / 74,049.12-102,187.68-40,515.12

Finding the Fourth Proportional to 74,049.12, 102,187.68 and 40,515.12

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Solution

The fourth proportional to 74,049.12, 102,187.68 and 40,515.12 is: 55,910.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,049.12 : 102,187.68 = 40,515.12 : x
  2. Step 2: Convert to fraction form
    74,049.12/102,187.68 = 40,515.12/x
  3. Step 3: Cross multiply
    74,049.12x = 102,187.68 × 40,515.12
  4. Step 4: Simplify right side
    74,049.12x = 4,140,146,117.72
  5. Step 5: Solve for x
    x = 4,140,146,117.72/74,049.12
  6. Step 6: Final answer
    x = 55,910.81

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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.