Home / 81,457.72-112,414.68-45,646.40

Finding the Fourth Proportional to 81,457.72, 112,414.68 and 45,646.40

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Solution

The fourth proportional to 81,457.72, 112,414.68 and 45,646.40 is: 62,993.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,457.72 : 112,414.68 = 45,646.40 : x
  2. Step 2: Convert to fraction form
    81,457.72/112,414.68 = 45,646.40/x
  3. Step 3: Cross multiply
    81,457.72x = 112,414.68 × 45,646.40
  4. Step 4: Simplify right side
    81,457.72x = 5,131,325,449.15
  5. Step 5: Solve for x
    x = 5,131,325,449.15/81,457.72
  6. Step 6: Final answer
    x = 62,993.73

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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.