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Finding the Fourth Proportional to 71,893,472.40, 107,840,208.60 and 54,887,360.40

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Solution

The fourth proportional to 71,893,472.40, 107,840,208.60 and 54,887,360.40 is: 82,331,040.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,893,472.40 : 107,840,208.60 = 54,887,360.40 : x
  2. Step 2: Convert to fraction form
    71,893,472.40/107,840,208.60 = 54,887,360.40/x
  3. Step 3: Cross multiply
    71,893,472.40x = 107,840,208.60 × 54,887,360.40
  4. Step 4: Simplify right side
    71,893,472.40x = 5,919,064,395,039,379
  5. Step 5: Solve for x
    x = 5,919,064,395,039,379/71,893,472.40
  6. Step 6: Final answer
    x = 82,331,040.60

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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.