Home / 80,906,878.91-111,681,855.66-53,031,385.50

Finding the Fourth Proportional to 80,906,878.91, 111,681,855.66 and 53,031,385.50

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Solution

The fourth proportional to 80,906,878.91, 111,681,855.66 and 53,031,385.50 is: 73,203,213.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,906,878.91 : 111,681,855.66 = 53,031,385.50 : x
  2. Step 2: Convert to fraction form
    80,906,878.91/111,681,855.66 = 53,031,385.50/x
  3. Step 3: Cross multiply
    80,906,878.91x = 111,681,855.66 × 53,031,385.50
  4. Step 4: Simplify right side
    80,906,878.91x = 5,922,643,540,860,817
  5. Step 5: Solve for x
    x = 5,922,643,540,860,817/80,906,878.91
  6. Step 6: Final answer
    x = 73,203,213.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.