Home / 57,156.65-78,876.17-31,664.67

Finding the Fourth Proportional to 57,156.65, 78,876.17 and 31,664.67

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Solution

The fourth proportional to 57,156.65, 78,876.17 and 31,664.67 is: 43,697.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,156.65 : 78,876.17 = 31,664.67 : x
  2. Step 2: Convert to fraction form
    57,156.65/78,876.17 = 31,664.67/x
  3. Step 3: Cross multiply
    57,156.65x = 78,876.17 × 31,664.67
  4. Step 4: Simplify right side
    57,156.65x = 2,497,587,932.78
  5. Step 5: Solve for x
    x = 2,497,587,932.78/57,156.65
  6. Step 6: Final answer
    x = 43,697.24

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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.