Home / 56,771.12-78,350.31-31,280.11

Finding the Fourth Proportional to 56,771.12, 78,350.31 and 31,280.11

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Solution

The fourth proportional to 56,771.12, 78,350.31 and 31,280.11 is: 43,169.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,771.12 : 78,350.31 = 31,280.11 : x
  2. Step 2: Convert to fraction form
    56,771.12/78,350.31 = 31,280.11/x
  3. Step 3: Cross multiply
    56,771.12x = 78,350.31 × 31,280.11
  4. Step 4: Simplify right side
    56,771.12x = 2,450,806,315.33
  5. Step 5: Solve for x
    x = 2,450,806,315.33/56,771.12
  6. Step 6: Final answer
    x = 43,169.95

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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.