Home / 80,985.54-111,761.73-45,177.06

Finding the Fourth Proportional to 80,985.54, 111,761.73 and 45,177.06

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Solution

The fourth proportional to 80,985.54, 111,761.73 and 45,177.06 is: 62,345.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,985.54 : 111,761.73 = 45,177.06 : x
  2. Step 2: Convert to fraction form
    80,985.54/111,761.73 = 45,177.06/x
  3. Step 3: Cross multiply
    80,985.54x = 111,761.73 × 45,177.06
  4. Step 4: Simplify right side
    80,985.54x = 5,049,066,381.91
  5. Step 5: Solve for x
    x = 5,049,066,381.91/80,985.54
  6. Step 6: Final answer
    x = 62,345.28

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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.