Home / 83,820.35-115,676.29-51,999.50

Finding the Fourth Proportional to 83,820.35, 115,676.29 and 51,999.50

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Solution

The fourth proportional to 83,820.35, 115,676.29 and 51,999.50 is: 71,761.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,820.35 : 115,676.29 = 51,999.50 : x
  2. Step 2: Convert to fraction form
    83,820.35/115,676.29 = 51,999.50/x
  3. Step 3: Cross multiply
    83,820.35x = 115,676.29 × 51,999.50
  4. Step 4: Simplify right side
    83,820.35x = 6,015,108,403.48
  5. Step 5: Solve for x
    x = 6,015,108,403.48/83,820.35
  6. Step 6: Final answer
    x = 71,761.91

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1.5x scale

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.