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Finding the Fourth Proportional to 80,496,581.70, 120,744,872.55 and 57,989,727.30

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Solution

The fourth proportional to 80,496,581.70, 120,744,872.55 and 57,989,727.30 is: 86,984,590.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,496,581.70 : 120,744,872.55 = 57,989,727.30 : x
  2. Step 2: Convert to fraction form
    80,496,581.70/120,744,872.55 = 57,989,727.30/x
  3. Step 3: Cross multiply
    80,496,581.70x = 120,744,872.55 × 57,989,727.30
  4. Step 4: Simplify right side
    80,496,581.70x = 7,001,962,232,047,755
  5. Step 5: Solve for x
    x = 7,001,962,232,047,755/80,496,581.70
  6. Step 6: Final answer
    x = 86,984,590.95

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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.