Home / 57,385.72-79,192.23-31,891.28

Finding the Fourth Proportional to 57,385.72, 79,192.23 and 31,891.28

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Solution

The fourth proportional to 57,385.72, 79,192.23 and 31,891.28 is: 44,009.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,385.72 : 79,192.23 = 31,891.28 : x
  2. Step 2: Convert to fraction form
    57,385.72/79,192.23 = 31,891.28/x
  3. Step 3: Cross multiply
    57,385.72x = 79,192.23 × 31,891.28
  4. Step 4: Simplify right side
    57,385.72x = 2,525,541,421.30
  5. Step 5: Solve for x
    x = 2,525,541,421.30/57,385.72
  6. Step 6: Final answer
    x = 44,009.93

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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.