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Finding the Fourth Proportional to 72,792.10, 109,187.51 and 20,201.59

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Solution

The fourth proportional to 72,792.10, 109,187.51 and 20,201.59 is: 30,302.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,792.10 : 109,187.51 = 20,201.59 : x
  2. Step 2: Convert to fraction form
    72,792.10/109,187.51 = 20,201.59/x
  3. Step 3: Cross multiply
    72,792.10x = 109,187.51 × 20,201.59
  4. Step 4: Simplify right side
    72,792.10x = 2,205,761,310.14
  5. Step 5: Solve for x
    x = 2,205,761,310.14/72,792.10
  6. Step 6: Final answer
    x = 30,302.21

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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.