Home / 79,291.28-109,557.96-76,453.04

Finding the Fourth Proportional to 79,291.28, 109,557.96 and 76,453.04

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Solution

The fourth proportional to 79,291.28, 109,557.96 and 76,453.04 is: 105,636.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,291.28 : 109,557.96 = 76,453.04 : x
  2. Step 2: Convert to fraction form
    79,291.28/109,557.96 = 76,453.04/x
  3. Step 3: Cross multiply
    79,291.28x = 109,557.96 × 76,453.04
  4. Step 4: Simplify right side
    79,291.28x = 8,376,039,098.20
  5. Step 5: Solve for x
    x = 8,376,039,098.20/79,291.28
  6. Step 6: Final answer
    x = 105,636.32

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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.