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Finding the Fourth Proportional to 57,712.16, 79,640.72 and 36,213.49

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Solution

The fourth proportional to 57,712.16, 79,640.72 and 36,213.49 is: 49,973.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,712.16 : 79,640.72 = 36,213.49 : x
  2. Step 2: Convert to fraction form
    57,712.16/79,640.72 = 36,213.49/x
  3. Step 3: Cross multiply
    57,712.16x = 79,640.72 × 36,213.49
  4. Step 4: Simplify right side
    57,712.16x = 2,884,068,037.14
  5. Step 5: Solve for x
    x = 2,884,068,037.14/57,712.16
  6. Step 6: Final answer
    x = 49,973.31

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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.