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Finding the Fourth Proportional to 72,930.70, 100,577.47 and 49,993.85

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Solution

The fourth proportional to 72,930.70, 100,577.47 and 49,993.85 is: 68,945.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,930.70 : 100,577.47 = 49,993.85 : x
  2. Step 2: Convert to fraction form
    72,930.70/100,577.47 = 49,993.85/x
  3. Step 3: Cross multiply
    72,930.70x = 100,577.47 × 49,993.85
  4. Step 4: Simplify right side
    72,930.70x = 5,028,255,238.65
  5. Step 5: Solve for x
    x = 5,028,255,238.65/72,930.70
  6. Step 6: Final answer
    x = 68,945.66

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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.