Home / 87,495.74-120,743.07-49,769.90

Finding the Fourth Proportional to 87,495.74, 120,743.07 and 49,769.90

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Solution

The fourth proportional to 87,495.74, 120,743.07 and 49,769.90 is: 68,681.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,495.74 : 120,743.07 = 49,769.90 : x
  2. Step 2: Convert to fraction form
    87,495.74/120,743.07 = 49,769.90/x
  3. Step 3: Cross multiply
    87,495.74x = 120,743.07 × 49,769.90
  4. Step 4: Simplify right side
    87,495.74x = 6,009,370,519.59
  5. Step 5: Solve for x
    x = 6,009,370,519.59/87,495.74
  6. Step 6: Final answer
    x = 68,681.86

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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.