Home / 81,288.28-112,177.84-45,486.71

Finding the Fourth Proportional to 81,288.28, 112,177.84 and 45,486.71

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Solution

The fourth proportional to 81,288.28, 112,177.84 and 45,486.71 is: 62,771.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,288.28 : 112,177.84 = 45,486.71 : x
  2. Step 2: Convert to fraction form
    81,288.28/112,177.84 = 45,486.71/x
  3. Step 3: Cross multiply
    81,288.28x = 112,177.84 × 45,486.71
  4. Step 4: Simplify right side
    81,288.28x = 5,102,601,210.92
  5. Step 5: Solve for x
    x = 5,102,601,210.92/81,288.28
  6. Step 6: Final answer
    x = 62,771.67

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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.