Home / 81,249.32-112,121.34-45,443.36

Finding the Fourth Proportional to 81,249.32, 112,121.34 and 45,443.36

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Solution

The fourth proportional to 81,249.32, 112,121.34 and 45,443.36 is: 62,710.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,249.32 : 112,121.34 = 45,443.36 : x
  2. Step 2: Convert to fraction form
    81,249.32/112,121.34 = 45,443.36/x
  3. Step 3: Cross multiply
    81,249.32x = 112,121.34 × 45,443.36
  4. Step 4: Simplify right side
    81,249.32x = 5,095,170,417.30
  5. Step 5: Solve for x
    x = 5,095,170,417.30/81,249.32
  6. Step 6: Final answer
    x = 62,710.31

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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.