Home / 81,328.86-112,228.61-45,027.90

Finding the Fourth Proportional to 81,328.86, 112,228.61 and 45,027.90

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Solution

The fourth proportional to 81,328.86, 112,228.61 and 45,027.90 is: 62,135.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,328.86 : 112,228.61 = 45,027.90 : x
  2. Step 2: Convert to fraction form
    81,328.86/112,228.61 = 45,027.90/x
  3. Step 3: Cross multiply
    81,328.86x = 112,228.61 × 45,027.90
  4. Step 4: Simplify right side
    81,328.86x = 5,053,418,403.08
  5. Step 5: Solve for x
    x = 5,053,418,403.08/81,328.86
  6. Step 6: Final answer
    x = 62,135.61

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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.