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Finding the Fourth Proportional to 92,757.60, 139,146.12 and 40,172.40

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Solution

The fourth proportional to 92,757.60, 139,146.12 and 40,172.40 is: 60,262.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,757.60 : 139,146.12 = 40,172.40 : x
  2. Step 2: Convert to fraction form
    92,757.60/139,146.12 = 40,172.40/x
  3. Step 3: Cross multiply
    92,757.60x = 139,146.12 × 40,172.40
  4. Step 4: Simplify right side
    92,757.60x = 5,589,833,591.09
  5. Step 5: Solve for x
    x = 5,589,833,591.09/92,757.60
  6. Step 6: Final answer
    x = 60,262.81

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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.