Home / 87,917.48-121,326.15-47,631.50

Finding the Fourth Proportional to 87,917.48, 121,326.15 and 47,631.50

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Solution

The fourth proportional to 87,917.48, 121,326.15 and 47,631.50 is: 65,731.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,917.48 : 121,326.15 = 47,631.50 : x
  2. Step 2: Convert to fraction form
    87,917.48/121,326.15 = 47,631.50/x
  3. Step 3: Cross multiply
    87,917.48x = 121,326.15 × 47,631.50
  4. Step 4: Simplify right side
    87,917.48x = 5,778,946,513.73
  5. Step 5: Solve for x
    x = 5,778,946,513.73/87,917.48
  6. Step 6: Final answer
    x = 65,731.48

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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.