Home / 86,021.72-129,051.02-29,863.61

Finding the Fourth Proportional to 86,021.72, 129,051.02 and 29,863.61

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Solution

The fourth proportional to 86,021.72, 129,051.02 and 29,863.61 is: 44,801.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,021.72 : 129,051.02 = 29,863.61 : x
  2. Step 2: Convert to fraction form
    86,021.72/129,051.02 = 29,863.61/x
  3. Step 3: Cross multiply
    86,021.72x = 129,051.02 × 29,863.61
  4. Step 4: Simplify right side
    86,021.72x = 3,853,929,182.06
  5. Step 5: Solve for x
    x = 3,853,929,182.06/86,021.72
  6. Step 6: Final answer
    x = 44,801.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.