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Finding the Fourth Proportional to 73,724.20, 110,586.30 and 40,431.40

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Solution

The fourth proportional to 73,724.20, 110,586.30 and 40,431.40 is: 60,647.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,724.20 : 110,586.30 = 40,431.40 : x
  2. Step 2: Convert to fraction form
    73,724.20/110,586.30 = 40,431.40/x
  3. Step 3: Cross multiply
    73,724.20x = 110,586.30 × 40,431.40
  4. Step 4: Simplify right side
    73,724.20x = 4,471,158,929.82
  5. Step 5: Solve for x
    x = 4,471,158,929.82/73,724.20
  6. Step 6: Final answer
    x = 60,647.10

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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.