Home / 71,961.06-107,972.76-38,642.22

Finding the Fourth Proportional to 71,961.06, 107,972.76 and 38,642.22

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Solution

The fourth proportional to 71,961.06, 107,972.76 and 38,642.22 is: 57,980.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,961.06 : 107,972.76 = 38,642.22 : x
  2. Step 2: Convert to fraction form
    71,961.06/107,972.76 = 38,642.22/x
  3. Step 3: Cross multiply
    71,961.06x = 107,972.76 × 38,642.22
  4. Step 4: Simplify right side
    71,961.06x = 4,172,307,145.93
  5. Step 5: Solve for x
    x = 4,172,307,145.93/71,961.06
  6. Step 6: Final answer
    x = 57,980.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.