Home / 90,412.55-124,776.72-50,138.95

Finding the Fourth Proportional to 90,412.55, 124,776.72 and 50,138.95

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Solution

The fourth proportional to 90,412.55, 124,776.72 and 50,138.95 is: 69,195.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,412.55 : 124,776.72 = 50,138.95 : x
  2. Step 2: Convert to fraction form
    90,412.55/124,776.72 = 50,138.95/x
  3. Step 3: Cross multiply
    90,412.55x = 124,776.72 × 50,138.95
  4. Step 4: Simplify right side
    90,412.55x = 6,256,172,850.67
  5. Step 5: Solve for x
    x = 6,256,172,850.67/90,412.55
  6. Step 6: Final answer
    x = 69,195.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.