Home / 79,119,921.20-118,679,881.80-48,508,919.60

Finding the Fourth Proportional to 79,119,921.20, 118,679,881.80 and 48,508,919.60

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Solution

The fourth proportional to 79,119,921.20, 118,679,881.80 and 48,508,919.60 is: 72,763,379.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,119,921.20 : 118,679,881.80 = 48,508,919.60 : x
  2. Step 2: Convert to fraction form
    79,119,921.20/118,679,881.80 = 48,508,919.60/x
  3. Step 3: Cross multiply
    79,119,921.20x = 118,679,881.80 × 48,508,919.60
  4. Step 4: Simplify right side
    79,119,921.20x = 5,757,032,844,373,703
  5. Step 5: Solve for x
    x = 5,757,032,844,373,703/79,119,921.20
  6. Step 6: Final answer
    x = 72,763,379.40

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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.