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Finding the Fourth Proportional to 39,663, 54,731.70 and 23,736.78

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Solution

The fourth proportional to 39,663, 54,731.70 and 23,736.78 is: 32,754.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,663 : 54,731.70 = 23,736.78 : x
  2. Step 2: Convert to fraction form
    39,663/54,731.70 = 23,736.78/x
  3. Step 3: Cross multiply
    39,663x = 54,731.70 × 23,736.78
  4. Step 4: Simplify right side
    39,663x = 1,299,154,321.93
  5. Step 5: Solve for x
    x = 1,299,154,321.93/39,663
  6. Step 6: Final answer
    x = 32,754.82

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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.