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Finding the Fourth Proportional to 89,040.70, 133,447.65 and 36,390.70

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Solution

The fourth proportional to 89,040.70, 133,447.65 and 36,390.70 is: 54,539.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,040.70 : 133,447.65 = 36,390.70 : x
  2. Step 2: Convert to fraction form
    89,040.70/133,447.65 = 36,390.70/x
  3. Step 3: Cross multiply
    89,040.70x = 133,447.65 × 36,390.70
  4. Step 4: Simplify right side
    89,040.70x = 4,856,253,396.86
  5. Step 5: Solve for x
    x = 4,856,253,396.86/89,040.70
  6. Step 6: Final answer
    x = 54,539.70

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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.