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Finding the Fourth Proportional to 63,566, 87,698.40 and 39,683.60

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Solution

The fourth proportional to 63,566, 87,698.40 and 39,683.60 is: 54,749.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,566 : 87,698.40 = 39,683.60 : x
  2. Step 2: Convert to fraction form
    63,566/87,698.40 = 39,683.60/x
  3. Step 3: Cross multiply
    63,566x = 87,698.40 × 39,683.60
  4. Step 4: Simplify right side
    63,566x = 3,480,188,226.24
  5. Step 5: Solve for x
    x = 3,480,188,226.24/63,566
  6. Step 6: Final answer
    x = 54,749.21

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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.