Home / 81,730,099.87-122,595,601.32-20,319,258.65

Finding the Fourth Proportional to 81,730,099.87, 122,595,601.32 and 20,319,258.65

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Solution

The fourth proportional to 81,730,099.87, 122,595,601.32 and 20,319,258.65 is: 30,479,000.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,730,099.87 : 122,595,601.32 = 20,319,258.65 : x
  2. Step 2: Convert to fraction form
    81,730,099.87/122,595,601.32 = 20,319,258.65/x
  3. Step 3: Cross multiply
    81,730,099.87x = 122,595,601.32 × 20,319,258.65
  4. Step 4: Simplify right side
    81,730,099.87x = 2,491,051,731,960,383
  5. Step 5: Solve for x
    x = 2,491,051,731,960,383/81,730,099.87
  6. Step 6: Final answer
    x = 30,479,000.22

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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.