Home / 45,103.58-67,653.96-21,428.16

Finding the Fourth Proportional to 45,103.58, 67,653.96 and 21,428.16

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Solution

The fourth proportional to 45,103.58, 67,653.96 and 21,428.16 is: 32,141.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,103.58 : 67,653.96 = 21,428.16 : x
  2. Step 2: Convert to fraction form
    45,103.58/67,653.96 = 21,428.16/x
  3. Step 3: Cross multiply
    45,103.58x = 67,653.96 × 21,428.16
  4. Step 4: Simplify right side
    45,103.58x = 1,449,699,879.51
  5. Step 5: Solve for x
    x = 1,449,699,879.51/45,103.58
  6. Step 6: Final answer
    x = 32,141.57

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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.