Home / 79,539.90-119,307.11-20,376.15

Finding the Fourth Proportional to 79,539.90, 119,307.11 and 20,376.15

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Solution

The fourth proportional to 79,539.90, 119,307.11 and 20,376.15 is: 30,563.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,539.90 : 119,307.11 = 20,376.15 : x
  2. Step 2: Convert to fraction form
    79,539.90/119,307.11 = 20,376.15/x
  3. Step 3: Cross multiply
    79,539.90x = 119,307.11 × 20,376.15
  4. Step 4: Simplify right side
    79,539.90x = 2,431,019,467.55
  5. Step 5: Solve for x
    x = 2,431,019,467.55/79,539.90
  6. Step 6: Final answer
    x = 30,563.52

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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.