Home / 72,922.40-109,383.60-55,207.70

Finding the Fourth Proportional to 72,922.40, 109,383.60 and 55,207.70

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Solution

The fourth proportional to 72,922.40, 109,383.60 and 55,207.70 is: 82,811.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,922.40 : 109,383.60 = 55,207.70 : x
  2. Step 2: Convert to fraction form
    72,922.40/109,383.60 = 55,207.70/x
  3. Step 3: Cross multiply
    72,922.40x = 109,383.60 × 55,207.70
  4. Step 4: Simplify right side
    72,922.40x = 6,038,816,973.72
  5. Step 5: Solve for x
    x = 6,038,816,973.72/72,922.40
  6. Step 6: Final answer
    x = 82,811.55

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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.