Home / 78,015,461.68-117,030,919.92-28,844,207.56

Finding the Fourth Proportional to 78,015,461.68, 117,030,919.92 and 28,844,207.56

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Solution

The fourth proportional to 78,015,461.68, 117,030,919.92 and 28,844,207.56 is: 43,269,168.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,015,461.68 : 117,030,919.92 = 28,844,207.56 : x
  2. Step 2: Convert to fraction form
    78,015,461.68/117,030,919.92 = 28,844,207.56/x
  3. Step 3: Cross multiply
    78,015,461.68x = 117,030,919.92 × 28,844,207.56
  4. Step 4: Simplify right side
    78,015,461.68x = 3,375,664,145,110,218.50
  5. Step 5: Solve for x
    x = 3,375,664,145,110,218.50/78,015,461.68
  6. Step 6: Final answer
    x = 43,269,168.35

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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.