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Finding the Fourth Proportional to 84,876,894.76, 127,061,578.94 and 51,983,893.96

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Solution

The fourth proportional to 84,876,894.76, 127,061,578.94 and 51,983,893.96 is: 77,820,420.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,876,894.76 : 127,061,578.94 = 51,983,893.96 : x
  2. Step 2: Convert to fraction form
    84,876,894.76/127,061,578.94 = 51,983,893.96/x
  3. Step 3: Cross multiply
    84,876,894.76x = 127,061,578.94 × 51,983,893.96
  4. Step 4: Simplify right side
    84,876,894.76x = 6,605,155,646,007,129
  5. Step 5: Solve for x
    x = 6,605,155,646,007,129/84,876,894.76
  6. Step 6: Final answer
    x = 77,820,420.56

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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.