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Finding the Fourth Proportional to 80,325, 110,848.50 and 55,189.08

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Solution

The fourth proportional to 80,325, 110,848.50 and 55,189.08 is: 76,160.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,325 : 110,848.50 = 55,189.08 : x
  2. Step 2: Convert to fraction form
    80,325/110,848.50 = 55,189.08/x
  3. Step 3: Cross multiply
    80,325x = 110,848.50 × 55,189.08
  4. Step 4: Simplify right side
    80,325x = 6,117,626,734.38
  5. Step 5: Solve for x
    x = 6,117,626,734.38/80,325
  6. Step 6: Final answer
    x = 76,160.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.