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Finding the Fourth Proportional to 72,300.40, 108,450.60 and 36,761.65

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Solution

The fourth proportional to 72,300.40, 108,450.60 and 36,761.65 is: 55,142.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,300.40 : 108,450.60 = 36,761.65 : x
  2. Step 2: Convert to fraction form
    72,300.40/108,450.60 = 36,761.65/x
  3. Step 3: Cross multiply
    72,300.40x = 108,450.60 × 36,761.65
  4. Step 4: Simplify right side
    72,300.40x = 3,986,822,999.49
  5. Step 5: Solve for x
    x = 3,986,822,999.49/72,300.40
  6. Step 6: Final answer
    x = 55,142.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.