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Finding the Fourth Proportional to 78,765.81, 108,692.48 and 44,769.57

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Solution

The fourth proportional to 78,765.81, 108,692.48 and 44,769.57 is: 61,779.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,765.81 : 108,692.48 = 44,769.57 : x
  2. Step 2: Convert to fraction form
    78,765.81/108,692.48 = 44,769.57/x
  3. Step 3: Cross multiply
    78,765.81x = 108,692.48 × 44,769.57
  4. Step 4: Simplify right side
    78,765.81x = 4,866,115,296.16
  5. Step 5: Solve for x
    x = 4,866,115,296.16/78,765.81
  6. Step 6: Final answer
    x = 61,779.54

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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.