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Finding the Fourth Proportional to 54,287,553.60, 81,431,330.40 and 45,784,497.60

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Solution

The fourth proportional to 54,287,553.60, 81,431,330.40 and 45,784,497.60 is: 68,676,746.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,287,553.60 : 81,431,330.40 = 45,784,497.60 : x
  2. Step 2: Convert to fraction form
    54,287,553.60/81,431,330.40 = 45,784,497.60/x
  3. Step 3: Cross multiply
    54,287,553.60x = 81,431,330.40 × 45,784,497.60
  4. Step 4: Simplify right side
    54,287,553.60x = 3,728,292,551,263,607.50
  5. Step 5: Solve for x
    x = 3,728,292,551,263,607.50/54,287,553.60
  6. Step 6: Final answer
    x = 68,676,746.40

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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.