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Finding the Fourth Proportional to 90,033.86, 135,135.54 and 45,692.44

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Solution

The fourth proportional to 90,033.86, 135,135.54 and 45,692.44 is: 68,581.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,033.86 : 135,135.54 = 45,692.44 : x
  2. Step 2: Convert to fraction form
    90,033.86/135,135.54 = 45,692.44/x
  3. Step 3: Cross multiply
    90,033.86x = 135,135.54 × 45,692.44
  4. Step 4: Simplify right side
    90,033.86x = 6,174,672,215.48
  5. Step 5: Solve for x
    x = 6,174,672,215.48/90,033.86
  6. Step 6: Final answer
    x = 68,581.67

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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.