Home / 90,455.46-124,842.90-54,650.62

Finding the Fourth Proportional to 90,455.46, 124,842.90 and 54,650.62

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Solution

The fourth proportional to 90,455.46, 124,842.90 and 54,650.62 is: 75,426.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,455.46 : 124,842.90 = 54,650.62 : x
  2. Step 2: Convert to fraction form
    90,455.46/124,842.90 = 54,650.62/x
  3. Step 3: Cross multiply
    90,455.46x = 124,842.90 × 54,650.62
  4. Step 4: Simplify right side
    90,455.46x = 6,822,741,887.60
  5. Step 5: Solve for x
    x = 6,822,741,887.60/90,455.46
  6. Step 6: Final answer
    x = 75,426.53

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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.