Home / 81,001.89-111,782.68-45,191.91

Finding the Fourth Proportional to 81,001.89, 111,782.68 and 45,191.91

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Solution

The fourth proportional to 81,001.89, 111,782.68 and 45,191.91 is: 62,364.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,001.89 : 111,782.68 = 45,191.91 : x
  2. Step 2: Convert to fraction form
    81,001.89/111,782.68 = 45,191.91/x
  3. Step 3: Cross multiply
    81,001.89x = 111,782.68 × 45,191.91
  4. Step 4: Simplify right side
    81,001.89x = 5,051,672,814.12
  5. Step 5: Solve for x
    x = 5,051,672,814.12/81,001.89
  6. Step 6: Final answer
    x = 62,364.88

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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.