Home / 99,789,869-137,710,019.22-54,004,781

Finding the Fourth Proportional to 99,789,869, 137,710,019.22 and 54,004,781

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Solution

The fourth proportional to 99,789,869, 137,710,019.22 and 54,004,781 is: 74,526,597.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,789,869 : 137,710,019.22 = 54,004,781 : x
  2. Step 2: Convert to fraction form
    99,789,869/137,710,019.22 = 54,004,781/x
  3. Step 3: Cross multiply
    99,789,869x = 137,710,019.22 × 54,004,781
  4. Step 4: Simplify right side
    99,789,869x = 7,436,999,429,481,891
  5. Step 5: Solve for x
    x = 7,436,999,429,481,891/99,789,869
  6. Step 6: Final answer
    x = 74,526,597.78

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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.