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Finding the Fourth Proportional to 79,859.40, 119,577.90 and 63,990.60

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Solution

The fourth proportional to 79,859.40, 119,577.90 and 63,990.60 is: 95,816.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,859.40 : 119,577.90 = 63,990.60 : x
  2. Step 2: Convert to fraction form
    79,859.40/119,577.90 = 63,990.60/x
  3. Step 3: Cross multiply
    79,859.40x = 119,577.90 × 63,990.60
  4. Step 4: Simplify right side
    79,859.40x = 7,651,861,567.74
  5. Step 5: Solve for x
    x = 7,651,861,567.74/79,859.40
  6. Step 6: Final answer
    x = 95,816.67

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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.