Home / 87,917.61-121,326.33-47,631.65

Finding the Fourth Proportional to 87,917.61, 121,326.33 and 47,631.65

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Solution

The fourth proportional to 87,917.61, 121,326.33 and 47,631.65 is: 65,731.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,917.61 : 121,326.33 = 47,631.65 : x
  2. Step 2: Convert to fraction form
    87,917.61/121,326.33 = 47,631.65/x
  3. Step 3: Cross multiply
    87,917.61x = 121,326.33 × 47,631.65
  4. Step 4: Simplify right side
    87,917.61x = 5,778,973,286.34
  5. Step 5: Solve for x
    x = 5,778,973,286.34/87,917.61
  6. Step 6: Final answer
    x = 65,731.69

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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.