Home / 57,214.65-78,912.72-50,128.77

Finding the Fourth Proportional to 57,214.65, 78,912.72 and 50,128.77

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Solution

The fourth proportional to 57,214.65, 78,912.72 and 50,128.77 is: 69,139.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,214.65 : 78,912.72 = 50,128.77 : x
  2. Step 2: Convert to fraction form
    57,214.65/78,912.72 = 50,128.77/x
  3. Step 3: Cross multiply
    57,214.65x = 78,912.72 × 50,128.77
  4. Step 4: Simplify right side
    57,214.65x = 3,955,797,590.95
  5. Step 5: Solve for x
    x = 3,955,797,590.95/57,214.65
  6. Step 6: Final answer
    x = 69,139.59

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1.5x scale

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.