Home / 57,355.45-79,163.18-31,870.57

Finding the Fourth Proportional to 57,355.45, 79,163.18 and 31,870.57

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Solution

The fourth proportional to 57,355.45, 79,163.18 and 31,870.57 is: 43,988.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,355.45 : 79,163.18 = 31,870.57 : x
  2. Step 2: Convert to fraction form
    57,355.45/79,163.18 = 31,870.57/x
  3. Step 3: Cross multiply
    57,355.45x = 79,163.18 × 31,870.57
  4. Step 4: Simplify right side
    57,355.45x = 2,522,975,669.61
  5. Step 5: Solve for x
    x = 2,522,975,669.61/57,355.45
  6. Step 6: Final answer
    x = 43,988.42

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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.