Home / 81,985.22-122,982.26-25,829.74

Finding the Fourth Proportional to 81,985.22, 122,982.26 and 25,829.74

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Solution

The fourth proportional to 81,985.22, 122,982.26 and 25,829.74 is: 38,746.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,985.22 : 122,982.26 = 25,829.74 : x
  2. Step 2: Convert to fraction form
    81,985.22/122,982.26 = 25,829.74/x
  3. Step 3: Cross multiply
    81,985.22x = 122,982.26 × 25,829.74
  4. Step 4: Simplify right side
    81,985.22x = 3,176,599,800.41
  5. Step 5: Solve for x
    x = 3,176,599,800.41/81,985.22
  6. Step 6: Final answer
    x = 38,746.01

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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.