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Finding the Fourth Proportional to 55,434.40, 83,151.60 and 54,559.60

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Solution

The fourth proportional to 55,434.40, 83,151.60 and 54,559.60 is: 81,839.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,434.40 : 83,151.60 = 54,559.60 : x
  2. Step 2: Convert to fraction form
    55,434.40/83,151.60 = 54,559.60/x
  3. Step 3: Cross multiply
    55,434.40x = 83,151.60 × 54,559.60
  4. Step 4: Simplify right side
    55,434.40x = 4,536,718,035.36
  5. Step 5: Solve for x
    x = 4,536,718,035.36/55,434.40
  6. Step 6: Final answer
    x = 81,839.40

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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.