Home / 43,179.90-64,788.66-15,120.11

Finding the Fourth Proportional to 43,179.90, 64,788.66 and 15,120.11

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Solution

The fourth proportional to 43,179.90, 64,788.66 and 15,120.11 is: 22,686.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,179.90 : 64,788.66 = 15,120.11 : x
  2. Step 2: Convert to fraction form
    43,179.90/64,788.66 = 15,120.11/x
  3. Step 3: Cross multiply
    43,179.90x = 64,788.66 × 15,120.11
  4. Step 4: Simplify right side
    43,179.90x = 979,611,342.01
  5. Step 5: Solve for x
    x = 979,611,342.01/43,179.90
  6. Step 6: Final answer
    x = 22,686.74

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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.