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Finding the Fourth Proportional to 81,648,291.60, 122,472,437.40 and 49,399,664.40

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Solution

The fourth proportional to 81,648,291.60, 122,472,437.40 and 49,399,664.40 is: 74,099,496.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,648,291.60 : 122,472,437.40 = 49,399,664.40 : x
  2. Step 2: Convert to fraction form
    81,648,291.60/122,472,437.40 = 49,399,664.40/x
  3. Step 3: Cross multiply
    81,648,291.60x = 122,472,437.40 × 49,399,664.40
  4. Step 4: Simplify right side
    81,648,291.60x = 6,050,097,305,810,009
  5. Step 5: Solve for x
    x = 6,050,097,305,810,009/81,648,291.60
  6. Step 6: Final answer
    x = 74,099,496.60

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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.