Home / 57,172.80-78,898.50-31,331.24

Finding the Fourth Proportional to 57,172.80, 78,898.50 and 31,331.24

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Solution

The fourth proportional to 57,172.80, 78,898.50 and 31,331.24 is: 43,237.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,172.80 : 78,898.50 = 31,331.24 : x
  2. Step 2: Convert to fraction form
    57,172.80/78,898.50 = 31,331.24/x
  3. Step 3: Cross multiply
    57,172.80x = 78,898.50 × 31,331.24
  4. Step 4: Simplify right side
    57,172.80x = 2,471,987,444.65
  5. Step 5: Solve for x
    x = 2,471,987,444.65/57,172.80
  6. Step 6: Final answer
    x = 43,237.12

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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.