Home / 80,459,217.20-120,688,825.80-31,948,641.20

Finding the Fourth Proportional to 80,459,217.20, 120,688,825.80 and 31,948,641.20

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Solution

The fourth proportional to 80,459,217.20, 120,688,825.80 and 31,948,641.20 is: 47,922,961.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,459,217.20 : 120,688,825.80 = 31,948,641.20 : x
  2. Step 2: Convert to fraction form
    80,459,217.20/120,688,825.80 = 31,948,641.20/x
  3. Step 3: Cross multiply
    80,459,217.20x = 120,688,825.80 × 31,948,641.20
  4. Step 4: Simplify right side
    80,459,217.20x = 3,855,843,992,333,503
  5. Step 5: Solve for x
    x = 3,855,843,992,333,503/80,459,217.20
  6. Step 6: Final answer
    x = 47,922,961.80

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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.