Home / 87,982.16-121,415.49-47,695.91

Finding the Fourth Proportional to 87,982.16, 121,415.49 and 47,695.91

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Solution

The fourth proportional to 87,982.16, 121,415.49 and 47,695.91 is: 65,820.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,982.16 : 121,415.49 = 47,695.91 : x
  2. Step 2: Convert to fraction form
    87,982.16/121,415.49 = 47,695.91/x
  3. Step 3: Cross multiply
    87,982.16x = 121,415.49 × 47,695.91
  4. Step 4: Simplify right side
    87,982.16x = 5,791,021,676.57
  5. Step 5: Solve for x
    x = 5,791,021,676.57/87,982.16
  6. Step 6: Final answer
    x = 65,820.41

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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.