Home / 81,419.10-122,124.60-41,980.20

Finding the Fourth Proportional to 81,419.10, 122,124.60 and 41,980.20

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Solution

The fourth proportional to 81,419.10, 122,124.60 and 41,980.20 is: 62,968.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,419.10 : 122,124.60 = 41,980.20 : x
  2. Step 2: Convert to fraction form
    81,419.10/122,124.60 = 41,980.20/x
  3. Step 3: Cross multiply
    81,419.10x = 122,124.60 × 41,980.20
  4. Step 4: Simplify right side
    81,419.10x = 5,126,815,132.92
  5. Step 5: Solve for x
    x = 5,126,815,132.92/81,419.10
  6. Step 6: Final answer
    x = 62,968.21

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1.5x scale

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.