Home / 87,004,986.99-120,070,038.77-49,842,449.61

Finding the Fourth Proportional to 87,004,986.99, 120,070,038.77 and 49,842,449.61

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Solution

The fourth proportional to 87,004,986.99, 120,070,038.77 and 49,842,449.61 is: 68,784,388.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,004,986.99 : 120,070,038.77 = 49,842,449.61 : x
  2. Step 2: Convert to fraction form
    87,004,986.99/120,070,038.77 = 49,842,449.61/x
  3. Step 3: Cross multiply
    87,004,986.99x = 120,070,038.77 × 49,842,449.61
  4. Step 4: Simplify right side
    87,004,986.99x = 5,984,584,857,064,471
  5. Step 5: Solve for x
    x = 5,984,584,857,064,471/87,004,986.99
  6. Step 6: Final answer
    x = 68,784,388.85

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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.