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Finding the Fourth Proportional to 55,658.62, 83,520.69 and 20,622.70

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Solution

The fourth proportional to 55,658.62, 83,520.69 and 20,622.70 is: 30,946.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,658.62 : 83,520.69 = 20,622.70 : x
  2. Step 2: Convert to fraction form
    55,658.62/83,520.69 = 20,622.70/x
  3. Step 3: Cross multiply
    55,658.62x = 83,520.69 × 20,622.70
  4. Step 4: Simplify right side
    55,658.62x = 1,722,422,133.66
  5. Step 5: Solve for x
    x = 1,722,422,133.66/55,658.62
  6. Step 6: Final answer
    x = 30,946.19

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1.5x scale

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.