Home / 90,020.85-135,037.85-30,856.02

Finding the Fourth Proportional to 90,020.85, 135,037.85 and 30,856.02

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Solution

The fourth proportional to 90,020.85, 135,037.85 and 30,856.02 is: 46,286.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,020.85 : 135,037.85 = 30,856.02 : x
  2. Step 2: Convert to fraction form
    90,020.85/135,037.85 = 30,856.02/x
  3. Step 3: Cross multiply
    90,020.85x = 135,037.85 × 30,856.02
  4. Step 4: Simplify right side
    90,020.85x = 4,166,730,600.36
  5. Step 5: Solve for x
    x = 4,166,730,600.36/90,020.85
  6. Step 6: Final answer
    x = 46,286.28

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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.