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Finding the Fourth Proportional to 92,945,718.51, 128,264,382.04 and 51,128,883.38

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Solution

The fourth proportional to 92,945,718.51, 128,264,382.04 and 51,128,883.38 is: 70,557,468.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,945,718.51 : 128,264,382.04 = 51,128,883.38 : x
  2. Step 2: Convert to fraction form
    92,945,718.51/128,264,382.04 = 51,128,883.38/x
  3. Step 3: Cross multiply
    92,945,718.51x = 128,264,382.04 × 51,128,883.38
  4. Step 4: Simplify right side
    92,945,718.51x = 6,558,014,631,419,888
  5. Step 5: Solve for x
    x = 6,558,014,631,419,888/92,945,718.51
  6. Step 6: Final answer
    x = 70,557,468.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.