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Finding the Fourth Proportional to 63,133.72, 87,045.76 and 40,435.44

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Solution

The fourth proportional to 63,133.72, 87,045.76 and 40,435.44 is: 55,750.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,133.72 : 87,045.76 = 40,435.44 : x
  2. Step 2: Convert to fraction form
    63,133.72/87,045.76 = 40,435.44/x
  3. Step 3: Cross multiply
    63,133.72x = 87,045.76 × 40,435.44
  4. Step 4: Simplify right side
    63,133.72x = 3,519,733,605.73
  5. Step 5: Solve for x
    x = 3,519,733,605.73/63,133.72
  6. Step 6: Final answer
    x = 55,750.45

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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.