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Finding the Fourth Proportional to 55,648.99, 83,487.12 and 18,211.06

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Solution

The fourth proportional to 55,648.99, 83,487.12 and 18,211.06 is: 27,321.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,648.99 : 83,487.12 = 18,211.06 : x
  2. Step 2: Convert to fraction form
    55,648.99/83,487.12 = 18,211.06/x
  3. Step 3: Cross multiply
    55,648.99x = 83,487.12 × 18,211.06
  4. Step 4: Simplify right side
    55,648.99x = 1,520,388,951.55
  5. Step 5: Solve for x
    x = 1,520,388,951.55/55,648.99
  6. Step 6: Final answer
    x = 27,321.05

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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.