Home / 66,712.21-100,117.62-53,721.43

Finding the Fourth Proportional to 66,712.21, 100,117.62 and 53,721.43

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Solution

The fourth proportional to 66,712.21, 100,117.62 and 53,721.43 is: 80,621.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,712.21 : 100,117.62 = 53,721.43 : x
  2. Step 2: Convert to fraction form
    66,712.21/100,117.62 = 53,721.43/x
  3. Step 3: Cross multiply
    66,712.21x = 100,117.62 × 53,721.43
  4. Step 4: Simplify right side
    66,712.21x = 5,378,461,464.30
  5. Step 5: Solve for x
    x = 5,378,461,464.30/66,712.21
  6. Step 6: Final answer
    x = 80,621.85

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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.