Home / 74,134.64-102,305.62-40,143.16

Finding the Fourth Proportional to 74,134.64, 102,305.62 and 40,143.16

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Solution

The fourth proportional to 74,134.64, 102,305.62 and 40,143.16 is: 55,397.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,134.64 : 102,305.62 = 40,143.16 : x
  2. Step 2: Convert to fraction form
    74,134.64/102,305.62 = 40,143.16/x
  3. Step 3: Cross multiply
    74,134.64x = 102,305.62 × 40,143.16
  4. Step 4: Simplify right side
    74,134.64x = 4,106,870,872.56
  5. Step 5: Solve for x
    x = 4,106,870,872.56/74,134.64
  6. Step 6: Final answer
    x = 55,397.46

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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.