Home / 78,765.18-108,692.67-42,954.54

Finding the Fourth Proportional to 78,765.18, 108,692.67 and 42,954.54

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Solution

The fourth proportional to 78,765.18, 108,692.67 and 42,954.54 is: 59,275.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,765.18 : 108,692.67 = 42,954.54 : x
  2. Step 2: Convert to fraction form
    78,765.18/108,692.67 = 42,954.54/x
  3. Step 3: Cross multiply
    78,765.18x = 108,692.67 × 42,954.54
  4. Step 4: Simplify right side
    78,765.18x = 4,668,843,641.22
  5. Step 5: Solve for x
    x = 4,668,843,641.22/78,765.18
  6. Step 6: Final answer
    x = 59,275.48

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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.