Home / 81,414,156.64-122,120,612.88-20,829,785.44

Finding the Fourth Proportional to 81,414,156.64, 122,120,612.88 and 20,829,785.44

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Solution

The fourth proportional to 81,414,156.64, 122,120,612.88 and 20,829,785.44 is: 31,244,519.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,414,156.64 : 122,120,612.88 = 20,829,785.44 : x
  2. Step 2: Convert to fraction form
    81,414,156.64/122,120,612.88 = 20,829,785.44/x
  3. Step 3: Cross multiply
    81,414,156.64x = 122,120,612.88 × 20,829,785.44
  4. Step 4: Simplify right side
    81,414,156.64x = 2,543,746,164,091,700.50
  5. Step 5: Solve for x
    x = 2,543,746,164,091,700.50/81,414,156.64
  6. Step 6: Final answer
    x = 31,244,519.00

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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.