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Finding the Fourth Proportional to 65,664,562.40, 98,496,843.60 and 38,454,783.20

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Solution

The fourth proportional to 65,664,562.40, 98,496,843.60 and 38,454,783.20 is: 57,682,174.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,664,562.40 : 98,496,843.60 = 38,454,783.20 : x
  2. Step 2: Convert to fraction form
    65,664,562.40/98,496,843.60 = 38,454,783.20/x
  3. Step 3: Cross multiply
    65,664,562.40x = 98,496,843.60 × 38,454,783.20
  4. Step 4: Simplify right side
    65,664,562.40x = 3,787,674,766,522,307.50
  5. Step 5: Solve for x
    x = 3,787,674,766,522,307.50/65,664,562.40
  6. Step 6: Final answer
    x = 57,682,174.80

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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.