Home / 57,138.32-78,808.36-36,979.64

Finding the Fourth Proportional to 57,138.32, 78,808.36 and 36,979.64

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Solution

The fourth proportional to 57,138.32, 78,808.36 and 36,979.64 is: 51,004.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,138.32 : 78,808.36 = 36,979.64 : x
  2. Step 2: Convert to fraction form
    57,138.32/78,808.36 = 36,979.64/x
  3. Step 3: Cross multiply
    57,138.32x = 78,808.36 × 36,979.64
  4. Step 4: Simplify right side
    57,138.32x = 2,914,304,781.79
  5. Step 5: Solve for x
    x = 2,914,304,781.79/57,138.32
  6. Step 6: Final answer
    x = 51,004.38

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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.