Home / 90,039.99-135,144.73-45,698.57

Finding the Fourth Proportional to 90,039.99, 135,144.73 and 45,698.57

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Solution

The fourth proportional to 90,039.99, 135,144.73 and 45,698.57 is: 68,590.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,039.99 : 135,144.73 = 45,698.57 : x
  2. Step 2: Convert to fraction form
    90,039.99/135,144.73 = 45,698.57/x
  3. Step 3: Cross multiply
    90,039.99x = 135,144.73 × 45,698.57
  4. Step 4: Simplify right side
    90,039.99x = 6,175,920,228.31
  5. Step 5: Solve for x
    x = 6,175,920,228.31/90,039.99
  6. Step 6: Final answer
    x = 68,590.86

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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.