Home / 85,380,053.70-118,023,049.17-76,178,819.82

Finding the Fourth Proportional to 85,380,053.70, 118,023,049.17 and 76,178,819.82

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Solution

The fourth proportional to 85,380,053.70, 118,023,049.17 and 76,178,819.82 is: 105,303,946.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,380,053.70 : 118,023,049.17 = 76,178,819.82 : x
  2. Step 2: Convert to fraction form
    85,380,053.70/118,023,049.17 = 76,178,819.82/x
  3. Step 3: Cross multiply
    85,380,053.70x = 118,023,049.17 × 76,178,819.82
  4. Step 4: Simplify right side
    85,380,053.70x = 8,990,856,597,328,430
  5. Step 5: Solve for x
    x = 8,990,856,597,328,430/85,380,053.70
  6. Step 6: Final answer
    x = 105,303,946.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.