Home / 57,141.76-78,665.04-49,151.92

Finding the Fourth Proportional to 57,141.76, 78,665.04 and 49,151.92

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Solution

The fourth proportional to 57,141.76, 78,665.04 and 49,151.92 is: 67,665.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,141.76 : 78,665.04 = 49,151.92 : x
  2. Step 2: Convert to fraction form
    57,141.76/78,665.04 = 49,151.92/x
  3. Step 3: Cross multiply
    57,141.76x = 78,665.04 × 49,151.92
  4. Step 4: Simplify right side
    57,141.76x = 3,866,537,752.88
  5. Step 5: Solve for x
    x = 3,866,537,752.88/57,141.76
  6. Step 6: Final answer
    x = 67,665.71

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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.