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Finding the Fourth Proportional to 54,020.40, 81,030.60 and 52,868.40

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Solution

The fourth proportional to 54,020.40, 81,030.60 and 52,868.40 is: 79,302.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,020.40 : 81,030.60 = 52,868.40 : x
  2. Step 2: Convert to fraction form
    54,020.40/81,030.60 = 52,868.40/x
  3. Step 3: Cross multiply
    54,020.40x = 81,030.60 × 52,868.40
  4. Step 4: Simplify right side
    54,020.40x = 4,283,958,173.04
  5. Step 5: Solve for x
    x = 4,283,958,173.04/54,020.40
  6. Step 6: Final answer
    x = 79,302.60

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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.