Home / 55,771.70-83,261.55-53,438.90

Finding the Fourth Proportional to 55,771.70, 83,261.55 and 53,438.90

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Solution

The fourth proportional to 55,771.70, 83,261.55 and 53,438.90 is: 79,778.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,771.70 : 83,261.55 = 53,438.90 : x
  2. Step 2: Convert to fraction form
    55,771.70/83,261.55 = 53,438.90/x
  3. Step 3: Cross multiply
    55,771.70x = 83,261.55 × 53,438.90
  4. Step 4: Simplify right side
    55,771.70x = 4,449,405,377.10
  5. Step 5: Solve for x
    x = 4,449,405,377.10/55,771.70
  6. Step 6: Final answer
    x = 79,778.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.