Home / 90,334.85-135,511.50-31,170.35

Finding the Fourth Proportional to 90,334.85, 135,511.50 and 31,170.35

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Solution

The fourth proportional to 90,334.85, 135,511.50 and 31,170.35 is: 46,758.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,334.85 : 135,511.50 = 31,170.35 : x
  2. Step 2: Convert to fraction form
    90,334.85/135,511.50 = 31,170.35/x
  3. Step 3: Cross multiply
    90,334.85x = 135,511.50 × 31,170.35
  4. Step 4: Simplify right side
    90,334.85x = 4,223,940,206.47
  5. Step 5: Solve for x
    x = 4,223,940,206.47/90,334.85
  6. Step 6: Final answer
    x = 46,758.70

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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.