Home / 81,633.12-122,438.08-26,221.92

Finding the Fourth Proportional to 81,633.12, 122,438.08 and 26,221.92

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Solution

The fourth proportional to 81,633.12, 122,438.08 and 26,221.92 is: 39,329.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,633.12 : 122,438.08 = 26,221.92 : x
  2. Step 2: Convert to fraction form
    81,633.12/122,438.08 = 26,221.92/x
  3. Step 3: Cross multiply
    81,633.12x = 122,438.08 × 26,221.92
  4. Step 4: Simplify right side
    81,633.12x = 3,210,561,538.71
  5. Step 5: Solve for x
    x = 3,210,561,538.71/81,633.12
  6. Step 6: Final answer
    x = 39,329.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.