Home / 81,749.08-112,816.70-45,939.80

Finding the Fourth Proportional to 81,749.08, 112,816.70 and 45,939.80

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Solution

The fourth proportional to 81,749.08, 112,816.70 and 45,939.80 is: 63,398.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,749.08 : 112,816.70 = 45,939.80 : x
  2. Step 2: Convert to fraction form
    81,749.08/112,816.70 = 45,939.80/x
  3. Step 3: Cross multiply
    81,749.08x = 112,816.70 × 45,939.80
  4. Step 4: Simplify right side
    81,749.08x = 5,182,776,634.66
  5. Step 5: Solve for x
    x = 5,182,776,634.66/81,749.08
  6. Step 6: Final answer
    x = 63,398.59

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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.