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Finding the Fourth Proportional to 55,604.40, 83,390.40 and 20,061.60

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Solution

The fourth proportional to 55,604.40, 83,390.40 and 20,061.60 is: 30,086.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,604.40 : 83,390.40 = 20,061.60 : x
  2. Step 2: Convert to fraction form
    55,604.40/83,390.40 = 20,061.60/x
  3. Step 3: Cross multiply
    55,604.40x = 83,390.40 × 20,061.60
  4. Step 4: Simplify right side
    55,604.40x = 1,672,944,848.64
  5. Step 5: Solve for x
    x = 1,672,944,848.64/55,604.40
  6. Step 6: Final answer
    x = 30,086.56

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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.