Home / 76,789.60-105,968.40-43,255.84

Finding the Fourth Proportional to 76,789.60, 105,968.40 and 43,255.84

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Solution

The fourth proportional to 76,789.60, 105,968.40 and 43,255.84 is: 59,692.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,789.60 : 105,968.40 = 43,255.84 : x
  2. Step 2: Convert to fraction form
    76,789.60/105,968.40 = 43,255.84/x
  3. Step 3: Cross multiply
    76,789.60x = 105,968.40 × 43,255.84
  4. Step 4: Simplify right side
    76,789.60x = 4,583,752,155.46
  5. Step 5: Solve for x
    x = 4,583,752,155.46/76,789.60
  6. Step 6: Final answer
    x = 59,692.36

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1.5x scale

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.