Home / 87,050,451.87-120,129,619.66-47,891,387.90

Finding the Fourth Proportional to 87,050,451.87, 120,129,619.66 and 47,891,387.90

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Solution

The fourth proportional to 87,050,451.87, 120,129,619.66 and 47,891,387.90 is: 66,090,113.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,050,451.87 : 120,129,619.66 = 47,891,387.90 : x
  2. Step 2: Convert to fraction form
    87,050,451.87/120,129,619.66 = 47,891,387.90/x
  3. Step 3: Cross multiply
    87,050,451.87x = 120,129,619.66 × 47,891,387.90
  4. Step 4: Simplify right side
    87,050,451.87x = 5,753,174,213,597,122
  5. Step 5: Solve for x
    x = 5,753,174,213,597,122/87,050,451.87
  6. Step 6: Final answer
    x = 66,090,113.15

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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.