Home / 85,508,060.58-128,260,293.88-20,812,226.58

Finding the Fourth Proportional to 85,508,060.58, 128,260,293.88 and 20,812,226.58

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Solution

The fourth proportional to 85,508,060.58, 128,260,293.88 and 20,812,226.58 is: 31,217,902.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,508,060.58 : 128,260,293.88 = 20,812,226.58 : x
  2. Step 2: Convert to fraction form
    85,508,060.58/128,260,293.88 = 20,812,226.58/x
  3. Step 3: Cross multiply
    85,508,060.58x = 128,260,293.88 × 20,812,226.58
  4. Step 4: Simplify right side
    85,508,060.58x = 2,669,382,297,447,947
  5. Step 5: Solve for x
    x = 2,669,382,297,447,947/85,508,060.58
  6. Step 6: Final answer
    x = 31,217,902.49

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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.