Home / 90,040.12-135,144.92-45,698.70

Finding the Fourth Proportional to 90,040.12, 135,144.92 and 45,698.70

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Solution

The fourth proportional to 90,040.12, 135,144.92 and 45,698.70 is: 68,591.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,040.12 : 135,144.92 = 45,698.70 : x
  2. Step 2: Convert to fraction form
    90,040.12/135,144.92 = 45,698.70/x
  3. Step 3: Cross multiply
    90,040.12x = 135,144.92 × 45,698.70
  4. Step 4: Simplify right side
    90,040.12x = 6,175,947,155.60
  5. Step 5: Solve for x
    x = 6,175,947,155.60/90,040.12
  6. Step 6: Final answer
    x = 68,591.06

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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.