Home / 91,431,757.81-137,161,021.15-42,914,539.81

Finding the Fourth Proportional to 91,431,757.81, 137,161,021.15 and 42,914,539.81

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Solution

The fourth proportional to 91,431,757.81, 137,161,021.15 and 42,914,539.81 is: 64,378,091.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,431,757.81 : 137,161,021.15 = 42,914,539.81 : x
  2. Step 2: Convert to fraction form
    91,431,757.81/137,161,021.15 = 42,914,539.81/x
  3. Step 3: Cross multiply
    91,431,757.81x = 137,161,021.15 × 42,914,539.81
  4. Step 4: Simplify right side
    91,431,757.81x = 5,886,202,101,836,122
  5. Step 5: Solve for x
    x = 5,886,202,101,836,122/91,431,757.81
  6. Step 6: Final answer
    x = 64,378,091.85

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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.