Home / 81,738.28-112,798.74-47,770.12

Finding the Fourth Proportional to 81,738.28, 112,798.74 and 47,770.12

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Solution

The fourth proportional to 81,738.28, 112,798.74 and 47,770.12 is: 65,922.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,738.28 : 112,798.74 = 47,770.12 : x
  2. Step 2: Convert to fraction form
    81,738.28/112,798.74 = 47,770.12/x
  3. Step 3: Cross multiply
    81,738.28x = 112,798.74 × 47,770.12
  4. Step 4: Simplify right side
    81,738.28x = 5,388,409,345.65
  5. Step 5: Solve for x
    x = 5,388,409,345.65/81,738.28
  6. Step 6: Final answer
    x = 65,922.72

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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.