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Finding the Fourth Proportional to 63,671.72, 87,866.36 and 35,376.80

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Solution

The fourth proportional to 63,671.72, 87,866.36 and 35,376.80 is: 48,819.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,671.72 : 87,866.36 = 35,376.80 : x
  2. Step 2: Convert to fraction form
    63,671.72/87,866.36 = 35,376.80/x
  3. Step 3: Cross multiply
    63,671.72x = 87,866.36 × 35,376.80
  4. Step 4: Simplify right side
    63,671.72x = 3,108,430,644.45
  5. Step 5: Solve for x
    x = 3,108,430,644.45/63,671.72
  6. Step 6: Final answer
    x = 48,819.64

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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.