Home / 74,178.32-102,366.38-40,186.87

Finding the Fourth Proportional to 74,178.32, 102,366.38 and 40,186.87

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Solution

The fourth proportional to 74,178.32, 102,366.38 and 40,186.87 is: 55,458.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,178.32 : 102,366.38 = 40,186.87 : x
  2. Step 2: Convert to fraction form
    74,178.32/102,366.38 = 40,186.87/x
  3. Step 3: Cross multiply
    74,178.32x = 102,366.38 × 40,186.87
  4. Step 4: Simplify right side
    74,178.32x = 4,113,784,249.98
  5. Step 5: Solve for x
    x = 4,113,784,249.98/74,178.32
  6. Step 6: Final answer
    x = 55,458.04

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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.