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Finding the Fourth Proportional to 66,541,292.90, 91,696,178.82 and 50,878,064.51

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Solution

The fourth proportional to 66,541,292.90, 91,696,178.82 and 50,878,064.51 is: 70,111,714.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,541,292.90 : 91,696,178.82 = 50,878,064.51 : x
  2. Step 2: Convert to fraction form
    66,541,292.90/91,696,178.82 = 50,878,064.51/x
  3. Step 3: Cross multiply
    66,541,292.90x = 91,696,178.82 × 50,878,064.51
  4. Step 4: Simplify right side
    66,541,292.90x = 4,665,324,101,324,455
  5. Step 5: Solve for x
    x = 4,665,324,101,324,455/66,541,292.90
  6. Step 6: Final answer
    x = 70,111,714.07

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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.