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Finding the Fourth Proportional to 99,447.60, 149,041.80 and 40,234.80

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Solution

The fourth proportional to 99,447.60, 149,041.80 and 40,234.80 is: 60,299.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,447.60 : 149,041.80 = 40,234.80 : x
  2. Step 2: Convert to fraction form
    99,447.60/149,041.80 = 40,234.80/x
  3. Step 3: Cross multiply
    99,447.60x = 149,041.80 × 40,234.80
  4. Step 4: Simplify right side
    99,447.60x = 5,996,667,014.64
  5. Step 5: Solve for x
    x = 5,996,667,014.64/99,447.60
  6. Step 6: Final answer
    x = 60,299.77

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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.