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Finding the Fourth Proportional to 78,761.30, 108,693.30 and 44,771.21

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Solution

The fourth proportional to 78,761.30, 108,693.30 and 44,771.21 is: 61,785.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,761.30 : 108,693.30 = 44,771.21 : x
  2. Step 2: Convert to fraction form
    78,761.30/108,693.30 = 44,771.21/x
  3. Step 3: Cross multiply
    78,761.30x = 108,693.30 × 44,771.21
  4. Step 4: Simplify right side
    78,761.30x = 4,866,330,559.89
  5. Step 5: Solve for x
    x = 4,866,330,559.89/78,761.30
  6. Step 6: Final answer
    x = 61,785.81

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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.