Home / 90,857.85-125,358.66-54,549.87

Finding the Fourth Proportional to 90,857.85, 125,358.66 and 54,549.87

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Solution

The fourth proportional to 90,857.85, 125,358.66 and 54,549.87 is: 75,263.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,857.85 : 125,358.66 = 54,549.87 : x
  2. Step 2: Convert to fraction form
    90,857.85/125,358.66 = 54,549.87/x
  3. Step 3: Cross multiply
    90,857.85x = 125,358.66 × 54,549.87
  4. Step 4: Simplify right side
    90,857.85x = 6,838,298,606.37
  5. Step 5: Solve for x
    x = 6,838,298,606.37/90,857.85
  6. Step 6: Final answer
    x = 75,263.71

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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.