Home / 81,820.20-122,730.30-26,416.20

Finding the Fourth Proportional to 81,820.20, 122,730.30 and 26,416.20

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Solution

The fourth proportional to 81,820.20, 122,730.30 and 26,416.20 is: 39,624.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,820.20 : 122,730.30 = 26,416.20 : x
  2. Step 2: Convert to fraction form
    81,820.20/122,730.30 = 26,416.20/x
  3. Step 3: Cross multiply
    81,820.20x = 122,730.30 × 26,416.20
  4. Step 4: Simplify right side
    81,820.20x = 3,242,068,150.86
  5. Step 5: Solve for x
    x = 3,242,068,150.86/81,820.20
  6. Step 6: Final answer
    x = 39,624.30

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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.