Home / 87,917.11-121,325.64-47,631.15

Finding the Fourth Proportional to 87,917.11, 121,325.64 and 47,631.15

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Solution

The fourth proportional to 87,917.11, 121,325.64 and 47,631.15 is: 65,731.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,917.11 : 121,325.64 = 47,631.15 : x
  2. Step 2: Convert to fraction form
    87,917.11/121,325.64 = 47,631.15/x
  3. Step 3: Cross multiply
    87,917.11x = 121,325.64 × 47,631.15
  4. Step 4: Simplify right side
    87,917.11x = 5,778,879,757.69
  5. Step 5: Solve for x
    x = 5,778,879,757.69/87,917.11
  6. Step 6: Final answer
    x = 65,731.00

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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.