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Finding the Fourth Proportional to 63,451.40, 87,516.37 and 45,564.78

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Solution

The fourth proportional to 63,451.40, 87,516.37 and 45,564.78 is: 62,845.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,451.40 : 87,516.37 = 45,564.78 : x
  2. Step 2: Convert to fraction form
    63,451.40/87,516.37 = 45,564.78/x
  3. Step 3: Cross multiply
    63,451.40x = 87,516.37 × 45,564.78
  4. Step 4: Simplify right side
    63,451.40x = 3,987,664,166.46
  5. Step 5: Solve for x
    x = 3,987,664,166.46/63,451.40
  6. Step 6: Final answer
    x = 62,845.96

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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.