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Finding the Fourth Proportional to 90,829.70, 136,147.35 and 40,901.30

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Solution

The fourth proportional to 90,829.70, 136,147.35 and 40,901.30 is: 61,308.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,829.70 : 136,147.35 = 40,901.30 : x
  2. Step 2: Convert to fraction form
    90,829.70/136,147.35 = 40,901.30/x
  3. Step 3: Cross multiply
    90,829.70x = 136,147.35 × 40,901.30
  4. Step 4: Simplify right side
    90,829.70x = 5,568,603,606.56
  5. Step 5: Solve for x
    x = 5,568,603,606.56/90,829.70
  6. Step 6: Final answer
    x = 61,308.18

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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.