Home / 78,279,904.80-117,419,857.20-47,668,903.20

Finding the Fourth Proportional to 78,279,904.80, 117,419,857.20 and 47,668,903.20

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Solution

The fourth proportional to 78,279,904.80, 117,419,857.20 and 47,668,903.20 is: 71,503,354.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,279,904.80 : 117,419,857.20 = 47,668,903.20 : x
  2. Step 2: Convert to fraction form
    78,279,904.80/117,419,857.20 = 47,668,903.20/x
  3. Step 3: Cross multiply
    78,279,904.80x = 117,419,857.20 × 47,668,903.20
  4. Step 4: Simplify right side
    78,279,904.80x = 5,597,275,806,624,624
  5. Step 5: Solve for x
    x = 5,597,275,806,624,624/78,279,904.80
  6. Step 6: Final answer
    x = 71,503,354.80

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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.