Home / 87,383.86-120,574.78-49,138.02

Finding the Fourth Proportional to 87,383.86, 120,574.78 and 49,138.02

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Solution

The fourth proportional to 87,383.86, 120,574.78 and 49,138.02 is: 67,802.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,383.86 : 120,574.78 = 49,138.02 : x
  2. Step 2: Convert to fraction form
    87,383.86/120,574.78 = 49,138.02/x
  3. Step 3: Cross multiply
    87,383.86x = 120,574.78 × 49,138.02
  4. Step 4: Simplify right side
    87,383.86x = 5,924,805,489.17
  5. Step 5: Solve for x
    x = 5,924,805,489.17/87,383.86
  6. Step 6: Final answer
    x = 67,802.05

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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.