Home / 90,857.82-125,377.52-56,864.88

Finding the Fourth Proportional to 90,857.82, 125,377.52 and 56,864.88

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Solution

The fourth proportional to 90,857.82, 125,377.52 and 56,864.88 is: 78,469.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,857.82 : 125,377.52 = 56,864.88 : x
  2. Step 2: Convert to fraction form
    90,857.82/125,377.52 = 56,864.88/x
  3. Step 3: Cross multiply
    90,857.82x = 125,377.52 × 56,864.88
  4. Step 4: Simplify right side
    90,857.82x = 7,129,577,629.50
  5. Step 5: Solve for x
    x = 7,129,577,629.50/90,857.82
  6. Step 6: Final answer
    x = 78,469.61

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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.