Home / 78,624,279.20-117,936,418.80-40,360,527.20

Finding the Fourth Proportional to 78,624,279.20, 117,936,418.80 and 40,360,527.20

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Solution

The fourth proportional to 78,624,279.20, 117,936,418.80 and 40,360,527.20 is: 60,540,790.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,624,279.20 : 117,936,418.80 = 40,360,527.20 : x
  2. Step 2: Convert to fraction form
    78,624,279.20/117,936,418.80 = 40,360,527.20/x
  3. Step 3: Cross multiply
    78,624,279.20x = 117,936,418.80 × 40,360,527.20
  4. Step 4: Simplify right side
    78,624,279.20x = 4,759,976,038,847,992
  5. Step 5: Solve for x
    x = 4,759,976,038,847,992/78,624,279.20
  6. Step 6: Final answer
    x = 60,540,790.80

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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.