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Finding the Fourth Proportional to 72,125.38, 108,186.90 and 27,761.77

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Solution

The fourth proportional to 72,125.38, 108,186.90 and 27,761.77 is: 41,642.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,125.38 : 108,186.90 = 27,761.77 : x
  2. Step 2: Convert to fraction form
    72,125.38/108,186.90 = 27,761.77/x
  3. Step 3: Cross multiply
    72,125.38x = 108,186.90 × 27,761.77
  4. Step 4: Simplify right side
    72,125.38x = 3,003,459,834.81
  5. Step 5: Solve for x
    x = 3,003,459,834.81/72,125.38
  6. Step 6: Final answer
    x = 41,642.20

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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.