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Finding the Fourth Proportional to 54,114.70, 81,172.05 and 40,992.70

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Solution

The fourth proportional to 54,114.70, 81,172.05 and 40,992.70 is: 61,489.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,114.70 : 81,172.05 = 40,992.70 : x
  2. Step 2: Convert to fraction form
    54,114.70/81,172.05 = 40,992.70/x
  3. Step 3: Cross multiply
    54,114.70x = 81,172.05 × 40,992.70
  4. Step 4: Simplify right side
    54,114.70x = 3,327,461,494.04
  5. Step 5: Solve for x
    x = 3,327,461,494.04/54,114.70
  6. Step 6: Final answer
    x = 61,489.05

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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.