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Finding the Fourth Proportional to 63,405.36, 87,499.98 and 38,250

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Solution

The fourth proportional to 63,405.36, 87,499.98 and 38,250 is: 52,785.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,405.36 : 87,499.98 = 38,250 : x
  2. Step 2: Convert to fraction form
    63,405.36/87,499.98 = 38,250/x
  3. Step 3: Cross multiply
    63,405.36x = 87,499.98 × 38,250
  4. Step 4: Simplify right side
    63,405.36x = 3,346,874,235
  5. Step 5: Solve for x
    x = 3,346,874,235/63,405.36
  6. Step 6: Final answer
    x = 52,785.35

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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.