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Finding the Fourth Proportional to 78,588.73, 117,863.40 and 33,587.84

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Solution

The fourth proportional to 78,588.73, 117,863.40 and 33,587.84 is: 50,373.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,588.73 : 117,863.40 = 33,587.84 : x
  2. Step 2: Convert to fraction form
    78,588.73/117,863.40 = 33,587.84/x
  3. Step 3: Cross multiply
    78,588.73x = 117,863.40 × 33,587.84
  4. Step 4: Simplify right side
    78,588.73x = 3,958,777,348.63
  5. Step 5: Solve for x
    x = 3,958,777,348.63/78,588.73
  6. Step 6: Final answer
    x = 50,373.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.