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Finding the Fourth Proportional to 72,550.26, 100,120.47 and 43,865.82

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Solution

The fourth proportional to 72,550.26, 100,120.47 and 43,865.82 is: 60,535.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,550.26 : 100,120.47 = 43,865.82 : x
  2. Step 2: Convert to fraction form
    72,550.26/100,120.47 = 43,865.82/x
  3. Step 3: Cross multiply
    72,550.26x = 100,120.47 × 43,865.82
  4. Step 4: Simplify right side
    72,550.26x = 4,391,866,515.34
  5. Step 5: Solve for x
    x = 4,391,866,515.34/72,550.26
  6. Step 6: Final answer
    x = 60,535.50

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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.