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Finding the Fourth Proportional to 63,698.40, 87,903.36 and 36,840.96

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Solution

The fourth proportional to 63,698.40, 87,903.36 and 36,840.96 is: 50,840.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,698.40 : 87,903.36 = 36,840.96 : x
  2. Step 2: Convert to fraction form
    63,698.40/87,903.36 = 36,840.96/x
  3. Step 3: Cross multiply
    63,698.40x = 87,903.36 × 36,840.96
  4. Step 4: Simplify right side
    63,698.40x = 3,238,444,169.63
  5. Step 5: Solve for x
    x = 3,238,444,169.63/63,698.40
  6. Step 6: Final answer
    x = 50,840.27

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1.5x scale

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.