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Finding the Fourth Proportional to 63,400, 87,515.04 and 36,904

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Solution

The fourth proportional to 63,400, 87,515.04 and 36,904 is: 50,940.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,400 : 87,515.04 = 36,904 : x
  2. Step 2: Convert to fraction form
    63,400/87,515.04 = 36,904/x
  3. Step 3: Cross multiply
    63,400x = 87,515.04 × 36,904
  4. Step 4: Simplify right side
    63,400x = 3,229,655,036.16
  5. Step 5: Solve for x
    x = 3,229,655,036.16/63,400
  6. Step 6: Final answer
    x = 50,940.93

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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.