Home / 66,721.14-100,115.65-29,271.50

Finding the Fourth Proportional to 66,721.14, 100,115.65 and 29,271.50

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Solution

The fourth proportional to 66,721.14, 100,115.65 and 29,271.50 is: 43,922.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,721.14 : 100,115.65 = 29,271.50 : x
  2. Step 2: Convert to fraction form
    66,721.14/100,115.65 = 29,271.50/x
  3. Step 3: Cross multiply
    66,721.14x = 100,115.65 × 29,271.50
  4. Step 4: Simplify right side
    66,721.14x = 2,930,535,160.42
  5. Step 5: Solve for x
    x = 2,930,535,160.42/66,721.14
  6. Step 6: Final answer
    x = 43,922.14

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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.