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Finding the Fourth Proportional to 63,484.89, 87,584.22 and 40,820.28

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Solution

The fourth proportional to 63,484.89, 87,584.22 and 40,820.28 is: 56,315.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,484.89 : 87,584.22 = 40,820.28 : x
  2. Step 2: Convert to fraction form
    63,484.89/87,584.22 = 40,820.28/x
  3. Step 3: Cross multiply
    63,484.89x = 87,584.22 × 40,820.28
  4. Step 4: Simplify right side
    63,484.89x = 3,575,212,383.98
  5. Step 5: Solve for x
    x = 3,575,212,383.98/63,484.89
  6. Step 6: Final answer
    x = 56,315.96

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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.