Home / 81,765.21-112,882.50-53,110.65

Finding the Fourth Proportional to 81,765.21, 112,882.50 and 53,110.65

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Solution

The fourth proportional to 81,765.21, 112,882.50 and 53,110.65 is: 73,322.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,765.21 : 112,882.50 = 53,110.65 : x
  2. Step 2: Convert to fraction form
    81,765.21/112,882.50 = 53,110.65/x
  3. Step 3: Cross multiply
    81,765.21x = 112,882.50 × 53,110.65
  4. Step 4: Simplify right side
    81,765.21x = 5,995,262,948.63
  5. Step 5: Solve for x
    x = 5,995,262,948.63/81,765.21
  6. Step 6: Final answer
    x = 73,322.91

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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.