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Finding the Fourth Proportional to 63,445.54, 87,515.20 and 40,814

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Solution

The fourth proportional to 63,445.54, 87,515.20 and 40,814 is: 56,297.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,445.54 : 87,515.20 = 40,814 : x
  2. Step 2: Convert to fraction form
    63,445.54/87,515.20 = 40,814/x
  3. Step 3: Cross multiply
    63,445.54x = 87,515.20 × 40,814
  4. Step 4: Simplify right side
    63,445.54x = 3,571,845,168.73
  5. Step 5: Solve for x
    x = 3,571,845,168.73/63,445.54
  6. Step 6: Final answer
    x = 56,297.82

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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.