Home / 78,571,231,753.67-117,856,847,498.30-18,879,894,018.70

Finding the Fourth Proportional to 78,571,231,753.67, 117,856,847,498.30 and 18,879,894,018.70

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Solution

The fourth proportional to 78,571,231,753.67, 117,856,847,498.30 and 18,879,894,018.70 is: 28,319,840,996.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,571,231,753.67 : 117,856,847,498.30 = 18,879,894,018.70 : x
  2. Step 2: Convert to fraction form
    78,571,231,753.67/117,856,847,498.30 = 18,879,894,018.70/x
  3. Step 3: Cross multiply
    78,571,231,753.67x = 117,856,847,498.30 × 18,879,894,018.70
  4. Step 4: Simplify right side
    78,571,231,753.67x = 2,225,124,790,146,110,062,592
  5. Step 5: Solve for x
    x = 2,225,124,790,146,110,062,592/78,571,231,753.67
  6. Step 6: Final answer
    x = 28,319,840,996.29

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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.