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Finding the Fourth Proportional to 63,643.36, 87,893.08 and 47,702.56

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Solution

The fourth proportional to 63,643.36, 87,893.08 and 47,702.56 is: 65,878.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,643.36 : 87,893.08 = 47,702.56 : x
  2. Step 2: Convert to fraction form
    63,643.36/87,893.08 = 47,702.56/x
  3. Step 3: Cross multiply
    63,643.36x = 87,893.08 × 47,702.56
  4. Step 4: Simplify right side
    63,643.36x = 4,192,724,922.28
  5. Step 5: Solve for x
    x = 4,192,724,922.28/63,643.36
  6. Step 6: Final answer
    x = 65,878.43

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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.