Home / 81,405.52-112,340.44-45,108.08

Finding the Fourth Proportional to 81,405.52, 112,340.44 and 45,108.08

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Solution

The fourth proportional to 81,405.52, 112,340.44 and 45,108.08 is: 62,249.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,405.52 : 112,340.44 = 45,108.08 : x
  2. Step 2: Convert to fraction form
    81,405.52/112,340.44 = 45,108.08/x
  3. Step 3: Cross multiply
    81,405.52x = 112,340.44 × 45,108.08
  4. Step 4: Simplify right side
    81,405.52x = 5,067,461,554.76
  5. Step 5: Solve for x
    x = 5,067,461,554.76/81,405.52
  6. Step 6: Final answer
    x = 62,249.61

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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.