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Finding the Fourth Proportional to 72,604,138.88, 108,905,813.76 and 41,878,801.28

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Solution

The fourth proportional to 72,604,138.88, 108,905,813.76 and 41,878,801.28 is: 62,817,974.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,604,138.88 : 108,905,813.76 = 41,878,801.28 : x
  2. Step 2: Convert to fraction form
    72,604,138.88/108,905,813.76 = 41,878,801.28/x
  3. Step 3: Cross multiply
    72,604,138.88x = 108,905,813.76 × 41,878,801.28
  4. Step 4: Simplify right side
    72,604,138.88x = 4,560,844,932,691,730
  5. Step 5: Solve for x
    x = 4,560,844,932,691,730/72,604,138.88
  6. Step 6: Final answer
    x = 62,817,974.33

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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.