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Finding the Fourth Proportional to 68,402.60, 94,357.66 and 40,102.84

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Solution

The fourth proportional to 68,402.60, 94,357.66 and 40,102.84 is: 55,319.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,402.60 : 94,357.66 = 40,102.84 : x
  2. Step 2: Convert to fraction form
    68,402.60/94,357.66 = 40,102.84/x
  3. Step 3: Cross multiply
    68,402.60x = 94,357.66 × 40,102.84
  4. Step 4: Simplify right side
    68,402.60x = 3,784,010,141.75
  5. Step 5: Solve for x
    x = 3,784,010,141.75/68,402.60
  6. Step 6: Final answer
    x = 55,319.68

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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.