Home / 87,964.10-121,389.78-47,676.83

Finding the Fourth Proportional to 87,964.10, 121,389.78 and 47,676.83

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Solution

The fourth proportional to 87,964.10, 121,389.78 and 47,676.83 is: 65,793.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,964.10 : 121,389.78 = 47,676.83 : x
  2. Step 2: Convert to fraction form
    87,964.10/121,389.78 = 47,676.83/x
  3. Step 3: Cross multiply
    87,964.10x = 121,389.78 × 47,676.83
  4. Step 4: Simplify right side
    87,964.10x = 5,787,479,482.82
  5. Step 5: Solve for x
    x = 5,787,479,482.82/87,964.10
  6. Step 6: Final answer
    x = 65,793.65

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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.