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Finding the Fourth Proportional to 55,808.55, 83,690.55 and 18,358.20

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Solution

The fourth proportional to 55,808.55, 83,690.55 and 18,358.20 is: 27,529.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,808.55 : 83,690.55 = 18,358.20 : x
  2. Step 2: Convert to fraction form
    55,808.55/83,690.55 = 18,358.20/x
  3. Step 3: Cross multiply
    55,808.55x = 83,690.55 × 18,358.20
  4. Step 4: Simplify right side
    55,808.55x = 1,536,407,855.01
  5. Step 5: Solve for x
    x = 1,536,407,855.01/55,808.55
  6. Step 6: Final answer
    x = 27,529.97

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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.